Rm-materials-handling WIRE ROPE HOISTS Service Manual de usuario descargar pdf (Pagina 96)

R&M Materials Handling, Inc.

4501 Gateway Boulevard

Springfield, Ohio 45502

P.: (937) 328-5100

FAX: (937) 325-5319

96/130

R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.

Rotation Resistant Ropes

Maximum wire breaks Rope diam.

Rope

construction

Detected length mm

Duty class M4 Duty class M5, M6

40 2 4

6.7 17 x 7

200 4 8

50 2 4

8 – 8.5 24 x 7

250 4 8

70 2 4

11 – 11.5 28x 7

350 4 8

90 2 4

15 28 x7

450 4 8

Local reduction of rope diameter

Rope diameter can decrease due to external or internal wear or damage. When the actual diameter of a

standard or heavy duty rope has decreased 7 % of the nominal diameter the rope shall be changed. In

rotation resistant ropes the decrease by 3% cause rope discard.

Local increase of rope diameter

Deformations inside the rope can cause increase of rope diameter. If the actual rope diameter is

increased by 5%, the rope shall be changed.

Basket (birdcage) deformation

Basket deformation is a result of a difference in length between the rope core and outer strands. Rope

with basket deformation shall be changed immediately.

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Rm-materials-handling WIRE ROPE HOISTS Service Manual de usuario Pagina 96