Rm-materials-handling MANUAL CHAIN HOISTS Manual de usuario descargar pdf (Pagina 16)

SERIES II I&M MANUAL/EN/

10/20

This document and the information contained herein, is the exclusive property of R&M Materials Handling, Inc., and represents a non-public, confidential and proprietary trade secret

that may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M Materials Handling, Inc.

4 INSPECTION

4.1 Load Chain

Check the condition of the load chain regularly. Never use the equipment if any of its links are cracked or

deformed. Link wear must not exceed 10 % of the specified diameter of the load chain.

Measure the load chain over 5 links + 2 diameters as shown below in the Load Chain Technical Specification

section. Compare the measurement with the appropriate value of the Dimension over 5 links + 2 diameters

for a new load chain.

Replace the unit if the link wear exceeds 10 %.

4.2 Load Chain Technical Specification

Table 1. Load Chain Technical Specifications

Chain diameter x pitch (mm)

4 x 12

5 x 15 6 x 18 7.1 x 21 8 x 24 10 x 28 9 x 27

Grade

80 80 80 80 80 80 80

Class

T T T T T T T

Minimum breaking strain (N/mm2)

900 900 900 900 900 900 900

Standard

DIN

5684

DIN 5684 DIN 5684 DIN 5684 DIN 5684 DIN 5684 DIN 5684

Safe load limit on 1 fall (kg)

250 500 1000 1500 2000 3000 2500

Breaking load (kN)

20 31.36 49 63.5 73.5 126 105

Min. total elongation over 7 links

10% 10% 10% 10% 10% 10% 10%

Dimension over 5 links + 2

diameters (mm)

(+0.28

/-0.15)

(+0.33/-0.16)

102

(+0/-0.6)

119.2

(+0/-0.8)

136

(+0.12/-0.66)

160

(+0.5/-0.3)

153

(+0.45/-0.25)

Dimension over 5 links + 2

diameters (inch)

2.677

(+0.011

/-0.005)

3.346

(+0.013/-0.006)

4.016

(+0/-0.024)

4.693

(+0/-0.031)

5.354

(+0.005/-0.026)

6.299

(+0.019/-0.012)

6.024

(+0.018/-0.010)

Weight (kg) per meter

0.235

0.370 0.524 0.732 0.934 1.378 1.156

Weight (lb) per foot

0.16 0.25 0.35 0.49 0.63 0.92 0.78

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 80 81

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