RUD case-hardened round steel chains

In demanding and safety-relevant industries, case-hardened RUD chains in grades RTS, RTD and RTB are the safe partner for any electric hoist. High demands on resistance, wear resistance and reliability are guaranteed to the maximum.

For motorised hoists.

  • For high wear resistance in accordance with DIN EN 818-7-T.
  • Have an exceptionally high vibration resistance,
    which makes a decisive contribution to preventing fatigue fractures during operation
    .

Design quality class DAT/T

Drive unit group ISO 4301-1 (FEM 9.511)

Nominal stress [N/mm ²]

Limit stress [N/mm ²]

M1 (1Dm)

200

250

M2 (1Cm)

160

225

M3 (1Bm)

160

200

M4(1Am)

140

180

M5 (2m)

125

160

M6 (3m)

112

140

M7 (4m)

100

125

M8 (5m)

90

112

Quality and designation Version DAT

   

RTS

RTD

RTB

Production test stress

σFPmin

N/mm ²

  

500

  

Breaking stress

σBmin

N/mm ²

  

800

  

Elongation at break

Amin

%

  

10

  

Surface hardness according to DIN EN 818-7

d≤6.5 ⌀ d ≥7 ⌀

HV 5 HV 10

  

500-650

  

Case hardness depth in the joint HTÄ (after macro-etching)

...d ±0.01 d

mm

≤ ⌀ 4/ 0.05 ⌀ 4.1-7 / 0.04 ⌀8-16 / 0.03 ≥ ⌀ 16.1 / 0.02

< ⌀8 / 0.05 ⌀8-11.5 / 0.04 ≥⌀12 / 0.03

< ⌀8 / 0.05 ⌀8-11.5 / 0.04 ≥⌀12 / 0.03

Vibration resistance

  

N/mm ²

130 ± 80

130 ± 90

130 ± 100

Design quality class DAT/T

Dimension [mm]

load capacity Ftr [kg] by drive unit group

load capacity Ftr [kg] by drive unit group

load capacity Ftr [kg] by drive unit group

load capacity Ftr [kg] by drive unit group

production test force

fracture force

weight [kg/m]

quality

quality

quality

material number

  
 

M3 (1Bm)

M4 (1Am)

M5 (2m)

M6 (3m)

     

RTS

RTD

RTB

    
 

Bearing stress: 160 N/mm²

Bearing stress: 140 N/mm²

Bearing stress: 125 N/mm²

Bearing stress: 112 N/mm²

                

Safety factor: 5

Safety factor: 5.7

Safety factor: 6.4

Safety factor: 7.1

                  

3 x 9

230

200

180

160

7

11.3

0.19

x

      

7985902

4 x 12

410

350

320

280

12.6

20.1

0.35

x

x

x

7100183

  

5 x 15

640

560

500

440

19.6

31.4

0.54

x

x

x

x

7100184

6 x 18

920

800

720

640

28.3

45.2

0.78

x

x

  

7101362

  

6.3 x 19

1000

880

790

710

31.2

49.9

0.86

x

    

7983648

  

6.3 x 19.1

1000

880

790

710

31.2

49.9

0.86

x

    

7102922

  

7 x 21

1250

1090

980

870

38.5

61.6

1.10

x

x

x

x

7102168

7 x 22

1250

1090

980

870

38.5

61.6

1.10

x

x

x

x

7100185

7.1 x 20.2

1250

1090

980

870

39.6

63.3

1.10

x

  

x

7103637

  

7.1 x 21.2

1290

1130

1000

900

39.6

63.3

1.10

x

    

7102924

  

8 x 24

1640

1810

1280

1140

50.3

80.4

1.4

x

    

7101363

  

9 x 27

270

2240

1620

1450

63.6

102

1.80

x

x

x

x

7100186

10 x 28

2560

2240

2000

1790

78.5

126

2.20

x

      

7102169

10 x 30.2

2560

2700

2000

1790

78.5

126

2.20

x

      

712926

11 x 31

3100

2800

2420

2160

95

152

2.70

x

      

7102955

11.2 x 34

3200

2800

2500

2240

98.5

157.6

2.70

  

x

    

7102927

11.2 x 34.4

3200

2800

2500

2240

98.5

157.6

2.70

  

x

    

7102930

11.3 x 31

3270

2860

2550

2280

160.5

160.5

2.70

x

x

x

x

7992923

13 x 36

4330

3780

3380

3030

132.7

212.3

2.85

x

  

x

59733

  

16 x 45

6550

5730

5120

4590

201

322

5.7

x

  

x

55004

  

23.5 x 66

14100

12370

11000

9900

434

694

12.20

x

    

7993516

  
Main catalogue hoist chains
(pdf, 8 MB)
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