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BS Lambda Lube Free
Roller Chain


 

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BS Lambda Chain

BS X-Lambda Chain

ANSI Lambda Chain

BS Lambda Lube Free Roller Chain

lambda-logo

Tsubaki's Lambda Chains were the first in the industry to use a special oil-impregnated bush. Since their launch in 1988, they have been adopted for diverse industries and applications, and their performance has been highly rated. Tsubaki has a wide line-up of lube-free, long life products that help customers reduce costs.

Single Strand Details

bs-lambda BS Lambda Chain
Dimensions in mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RF06B-LM-1 9.525 3/8" 6.35 5.72
RS08B-LM-1 12.70 1/2" 8.51 7.75
RS10B-LM-1 15.875 5/8" 10.16 9.65
RS12B-LM-1 19.05 3/4" 12.07 11.68
RS16B-LM-1 25.40 1" 15.88 17.02
RS20B-LM-1 31.75 1 1/4" 19.05 19.56
RS24B-LM-1 38.10 1 1/2" 25.40 25.40
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter
d2		 Length
L1		 Length
L2		 Length
L		 Thickness
T		 Thickness
t		 Height
H (max.)
RF06B-LM-1 3.28 6.10 7.70 15.10 1.30 1.00 8.20
RS08B-LM-1 4.45 8.40 10.00 18.60 1.60 1.60 12.00
RS10B-LM-1 5.08 9.55 11.25 20.80 1.50 1.50 14.70
RS12B-LM-1 5.72 11.10 13.00 24.40 1.80 1.80 16.10
RS16B-LM-1 8.28 17.75 19.95 39.30 4.00 3.20 21.00
RS20B-LM-1 10.19 19.90 23.10 46.60 4.40 3.40 26.40
RS24B-LM-1 14.63 26.65 31.85 61.70 6.00 5.60 33.40
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Approx. Mass
kg/m
RF06B-LM-1 - 8.9 0.39
RS08B-LM-1 - 17.8 0.70
RS10B-LM-1 - 22.2 0.95
RS12B-LM-1 - 28.9 1.25
RS16B-LM-1 - 60.0 2.70
RS20B-LM-1 - 95.0 3.85
RS24B-LM-1 - 160.0 7.45
  • Connecting links are clip type for sizes up to RS16B-LM, and cotter type for sizes RS20B-LM to RS24B-LM.
  • RF06B-LM chain has flat shaped link plates.
  • Centre sink riveting is applied for RS08B-LM-1 to RS16B-LM-1. Double stake riveting is applied to all other sizes including multi-strand chain.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • The listed sizes are stock items, other chain sizes are available on request.
  • Also available in Neptune™ specification.

Double Strand Details

bs-lambda2 BS Lambda Chain
Dimensions in mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RF06B-LM-2 9.525 3/8" 6.35 5.72
RS08B-LM-2 12.70 1/2" 8.51 7.75
RS10B-LM-2 15.875 5/8" 10.16 9.65
RS12B-LM-2 19.05 3/4" 12.07 11.68
RS16B-LM-2 25.40 1" 15.88 17.02
RS20B-LM-2 31.75 1 1/4" 19.05 19.56
RS24B-LM-2 38.10 1 1/2" 25.40 25.40
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter
d2		 Length
L1		 Length
L2		 Length
L		 Thickness
T		 Thickness
t		 Height
H (max.)
RF06B-LM-2 3.28 11.20 12.80 25.90 1.30 1.00 8.20
RS08B-LM-2 4.45 15.30 16.90 34.50 1.60 1.60 12.00
RS10B-LM-2 5.08 17.85 19.55 39.40 1.50 1.50 14.70
RS12B-LM-2 5.72 20.85 22.75 45.90 1.80 1.80 16.10
RS16B-LM-2 8.28 33.55 35.75 73.40 4.00 3.20 21.00
RS20B-LM-2 10.19 38.25 41.45 84.60 4.40 3.40 26.40
RS24B-LM-2 14.63 50.80 56.00 112.80 6.00 5.60 33.40
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Approx. Mass
kg/m
RF06B-LM-2 10.24 16.9 0.75
RS08B-LM-2 13.92 31.1 1.35
RS10B-LM-2 16.59 44.5 1.85
RS12B-LM-2 19.46 57.8 2.50
RS16B-LM-2 31.88 106.0 5.40
RS20B-LM-2 36.45 170.0 7.65
RS24B-LM-2 48.36 280.0 14.65
  • Connecting links are clip type for sizes up to RS16B-LM, and cotter type for sizes RS20B-LM to RS24B-LM.
  • RF06B-LM chain has flat shaped link plates.
  • Intermediate plate of RF06B-LM-2 and RS08B-LM-2 is a solid plate.
  • Centre sink riveting is applied for RS08B-LM-1 to RS16B-LM-1. Double stake riveting is applied to all other sizes including multi-strand chain.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • The listed sizes are stock items, other chain sizes are available on request.
  • Also available in Neptune™ specification.