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SHEAVE BLOCKS |
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John L. Robertson sheave blocks range from 63mm dia to
254mm dia Hand
operated and 152mm dia to 450mm dia Power operated,
in snatch, single, double
and treble configurations. |
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Optional Extras:
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Hand operated sheaves can be fitted
with high capacity bushes or bearings |
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Different wire rope sizes other than
standard |
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Specialized Sheaves |
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with ball or roller bearing |
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with special grooves |
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manufactured out of steel or other
materials |
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Special surface finish e.g., Oxo-sealed,
Zinc plated, Galvanizing etc. |
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Special Features
Safety latch fitted to hook as
standard
Drop
forged swivel Hook or Eye
Cast
iron machined sheaves to
suit either wire rope or manilla
(fibre) rope
Power operated sheaves are
fitted with high capacity bushes
Power operated axles are fitted
with a grease nipple to enable
pressure grease lubrication
Name
plate to show capacities
and other relevant details |
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Power Operated Sheave Blocks |
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SHEAVE DIA (G)
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WIRE ROPE DIA
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TYPE
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W.L.L. KG
|
A
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B
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C
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D
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E
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F
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152mm
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8mm
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SINGLE
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1000
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-
|
380
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-
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71
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-
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-
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DOUBLE
|
1500
|
-
|
380
|
-
|
-
|
107
|
-
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TREBLE
|
2000
|
-
|
380
|
-
|
-
|
-
|
144
|
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SNATCH
|
1000
|
396
|
-
|
71
|
-
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-
|
-
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178mm
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10mm
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SINGLE
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1500
|
-
|
443
|
-
|
83
|
-
|
-
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DOUBLE
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2000
|
-
|
443
|
-
|
-
|
126
|
-
|
|
TREBLE
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3000
|
-
|
443
|
-
|
-
|
-
|
169
|
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SNATCH
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1500
|
443
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-
|
83
|
-
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-
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-
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203mm
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12mm
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SINGLE
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2000
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-
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500
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-
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94
|
-
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-
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DOUBLE
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3000
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-
|
500
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-
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-
|
157
|
-
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TREBLE
|
4000
|
-
|
500
|
-
|
-
|
-
|
198
|
|
SNATCH
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2000
|
500
|
-
|
94
|
-
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-
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-
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229mm
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13mm
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SINGLE
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3000
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-
|
607
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-
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107
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-
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-
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DOUBLE
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4000
|
-
|
607
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-
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-
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168
|
-
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TREBLE
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5000
|
-
|
607
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-
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-
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-
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229
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SNATCH
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3000
|
607
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-
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107
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-
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-
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-
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254mm
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14mm
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SINGLE
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4000
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-
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643
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-
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114
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-
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-
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DOUBLE
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5000
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-
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643
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-
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-
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183
|
-
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TREBLE
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7500
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-
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643
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-
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-
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-
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252
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SNATCH
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4000
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643
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-
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114
|
-
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-
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-
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300mm
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16mm
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SINGLE
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5000
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SPECIFICATIONS
AVAILABLE UPON
REQUEST
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DOUBLE
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7500
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TREBLE
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10000
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SNATCH
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5000
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350mm |
20mm |
SINGLE |
7500 |
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DOUBLE |
10000 |
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TREBLE |
15000 |
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SNATCH |
7500 |
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400mm |
24mm |
SINGLE |
10000 |
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DOUBLE |
15000 |
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TREBLE |
20000 |
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SNATCH |
10000 |
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450mm |
26mm |
SINGLE |
10000 |
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DOUBLE |
15000 |
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TREBLE |
20000 |
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SNATCH |
10000 |
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Specifications on larger sheave blocks
are available upon request. Consult John
L. Robertson's sales department. |
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Hand Operated Sheave Blocks
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SHEAVE DIA (G)
|
WIRE ROPE DIA
|
FIBRE ROPE DIA
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TYPE
|
W.L.L. KG
|
A
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B
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C
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D
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E
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F
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63mm
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5mm
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10mm
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SINGLE
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250
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-
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168
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-
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35
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-
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-
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DOUBLE
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250
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-
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168
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-
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-
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59
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-
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TREBLE
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250
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-
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168
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-
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-
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-
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83
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SNATCH
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250
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173
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-
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41;
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-
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-
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-
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76mm
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6mm
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12mm;
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SINGLE
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250
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-
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189
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-
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35
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-
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-
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DOUBLE
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250
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-
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189
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-
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-
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59
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-
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TREBLE
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250
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-
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189
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-
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-
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-
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83
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SNATCH
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250
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194
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-
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41
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-
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-
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-
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89mm
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7mm
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14mm
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SINGLE
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250
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-
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253
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-
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38
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-
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-
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DOUBLE
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500
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-
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253
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-
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-
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64
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-
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TREBLE
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500
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-
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253
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-
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-
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-
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87
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SNATCH
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250
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258
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-
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51
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-
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-
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-
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102mm
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8mm
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16mm
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SINGLE
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500
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-
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276
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-
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48
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-
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-
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DOUBLE
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750
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-
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276
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-
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-
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79
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-
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TREBLE
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750
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-
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276
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-
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-
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-
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112
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SNATCH
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500
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281
|
-
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58
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-
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-
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-
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114mm
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9mm
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18mm
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SINGLE
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750
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-
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322
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-
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48
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-
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-
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DOUBLE
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750
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-
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322
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-
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-
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79
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-
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TREBLE
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1000
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-
|
322
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-
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-
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-
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112
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SNATCH
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750
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339
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-
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58
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-
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-
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-
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127mm
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10mm
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20mm
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SINGLE
|
1000
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-
|
333
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-
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61
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-
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-
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DOUBLE
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1000
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-
|
333
|
-
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-
|
95
|
-
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TREBLE
|
1000
|
-
|
333
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-
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-
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-
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131
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SNATCH
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1000
|
350
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-
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61
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-
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-
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-
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152mm
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12mm
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24mm
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SINGLE
|
1000
|
-
|
380
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-
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71
|
-
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-
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DOUBLE
|
1500
|
-
|
380
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-
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-
|
107
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-
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TREBLE
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2000
|
-
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380
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-
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-
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-
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144
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SNATCH
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1000
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396
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-
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71
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-
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-
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-
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178mm
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14mm
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28mm
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SINGLE
|
1500
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-
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443
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-
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83
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-
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-
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DOUBLE
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2000
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-
|
443
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-
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-
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126
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-
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TREBLE
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2000
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-
|
443
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-
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-
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-
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169
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SNATCH
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1500
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443
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-
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83
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-
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-
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-
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203mm
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16mm
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32mm
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SINGLE
|
2000
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-
|
500
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-
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94
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-
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-
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DOUBLE
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3000
|
-
|
500
|
-
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-
|
157
|
-
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TREBLE
|
4000
|
-
|
500
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-
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-
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-
|
198
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SNATCH
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2000
|
500
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-
|
94
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-
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-
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-
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229mm
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18mm
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36mm
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SINGLE
|
2500
|
-
|
607
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-
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107
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-
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-
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DOUBLE
|
4000
|
-
|
607
|
-
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-
|
168
|
-
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TREBLE
|
4000
|
-
|
607
|
-
|
-
|
-
|
229
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SNATCH
|
2500
|
607
|
-
|
107
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-
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-
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-
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254mm
|
20mm
|
40mm
|
SINGLE
|
3000
|
-
|
643
|
-
|
114
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-
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-
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DOUBLE
|
4000
|
-
|
643
|
-
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-
|
183
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-
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TREBLE
|
5000
|
-
|
643
|
-
|
-
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-
|
252
|
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SNATCH
|
3000
|
643
|
-
|
114
|
-
|
-
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Specifications on larger sheave blocks
are available upon request. Consult John
L. Robertson's sales department. |
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To request further information on this product
click here! |
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