RUD D-profile chains

RUD D-profile chain, the round steel chain 2.0, is the leading technologically advanced round steel chain. Thanks to a larger cross-sectional area, it has a higher maximum load capacity with hardly any change in dimensions and weights. RUD D-profile chains are case-hardened and designed for higher wear requirements.

RUD D-profile chain Case-hardened DAT version

  • For motor-driven hoists.
  • For high wear loads in accordance with EN 818-7-T.
  • Approx. 8% higher load capacity than comparable round steel chains!

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 quality quality material number  
  M3 (1Bm) M3 (1Bm) M4 (1Am) M5 (2m) FFPmin [kN] FBmin [kN] [kg/m] RTS RTD    
  Bearing stress: 200 N/mm² Bearing stress: 160 N/mm² Bearing stress: 140 N/mm² Bearing stress: 125 N/mm²              
Safety factor 5 Safety factor 5.7 Safety factor 6.4 Safety factor 7.1                
3.7 x 12 380 340 320 270 12.6 20.1 0.34   x 7907103  
3.75 x 10.75 380 340 320 270 12.6 20.1 0.34   x   7909389
5 x 14.3 630 600 540 480 21.3 34 0.61   x 7907401  
5.25 x 15 800 670 630 530 24.7 39.5 0.59 x   4608823  
7 x 21 1400 1220 1090 970 43 68.8 1.20   x 7903473  
7.45 x 23 1540 1350 1200 1080 50 80 1.35 x     7909391
9.6 x 30 2560 2240 2000 1790 78.5 126 2.15   x 7907402  

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