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Chain Product » Drive chain » RS/BS Lambda Roller Chain Λ Lambda (D-Λ)
RS/BS Lambda Roller Chain Λ Lambda (D-Λ) Tsubaki RS/BS Lambda Roller Chain Λ Lambda (D-Λ)
The latest in lube free chain-Tsubaki "Lambda Series" drive chain Superior wear life without lubrication-more than 14 times longer than standard roller chain (#35, #120, #140, five times longer) 1.5 to 10 times longer than brands of oil sealed chain. 1.2 to 20 times longer than lube free chain.

Can directly replace ANSI roller chain, BS roller chain and previous Lambda models. Major dimensions are the same as ANSI standard. Available from RS40-Λ up to RS140-Λ,RS08B-Λ up to RS16B-Λ.

• RS Lambda dimensions
• BS Lambda dimensions
Lambda Roller Chain
RS Lambda
Dimensions-mm
Chain No. Pitch
P
Roller Dia.
R
Width between Roller Link Plates
W
Standard Nickel Plated
RSD40-Λ RSD40NP-Λ 12.70 7.92 7.55
RSD50-Λ RSD50NP-Λ 15.875 10.16 9.26
RSD60-Λ RSD60NP-Λ 19.05 11.91 12.28
RSD80-Λ RSD80NP-Λ 25.40 15.88 15.48
RSD100-Λ RSD100NP-Λ 31.75 19.05 18.70
RSD120-Λ RSD120NP-Λ 38.10 22.23 24.75
RSD140-Λ RSD140NP-Λ 44.45 25.40 24.75
Dimensions-mm
Chain No. Link Plate
Standard Nickel Plated Thickness
T1
Thickness
T2
Height
H
Height
h
RSD40-Λ RSD40NP-Λ 1.5 2.0 12.0 10.4
RSD50-Λ RSD50NP-Λ 2.0 2.4 15.0 13.0
RSD60-Λ RSD60NP-Λ 2.4 3.2 18.1 15.6
RSD80-Λ RSD80NP-Λ 3.2 4.0 24.1 20.8
RSD100-Λ RSD100NP-Λ 4.0 4.8 30.1 26.0
RSD120-Λ RSD120NP-Λ 4.8 5.6 36.2 31.2
RSD140-Λ RSD140NP-Λ 5.6 6.4 42.2 36.4
Dimensions-mm
Chain No. Pin
Standard Nickel Plated Dia.
D
From Pin Head to C.L.
L1
From Pin end to C.L.
L2
From Pin end to C.L.
L
RSD40-Λ RSD40NP-Λ 3.97 8.78 10.45 20.0
RSD50-Λ RSD50NP-Λ 5.09 10.75 12.45 24.0
RSD60-Λ RSD60NP-Λ 5.96 13.75 15.65 32.0
RSD80-Λ RSD80NP-Λ 7.94 17.15 20.25 39.9
RSD100-Λ RSD100NP-Λ 9.54 20.65 23.85 47.5
RSD120-Λ RSD120NP-Λ 11.11 25.75 29.95 59.0
RSD140-Λ RSD140NP-Λ 12.71 27.70 32.20 63.7
Dimensions-mm
Chain No. Average Tensile Strength
kN {kgf}
Maximum Allowable Load
kN {kgf}
Standard Nickel Plated Standard Nickel Plated
RSD40-Λ RSD40NP-Λ 19.1 {1,950} 3.63 {370} 3.04 {310}
RSD50-Λ RSD50NP-Λ 31.4 {3,200} 6.37 {650} 5.39 {550}
RSD60-Λ RSD60NP-Λ 44.1 {4,500} 8.83 {900} 7.26 {740}
RSD80-Λ RSD80NP-Λ 78.5 {8,000} 14.7 {1,500} 12.7 {1,300}
RSD100-Λ RSD100NP-Λ 118  {12,000} 22.6 {2,300} 19.1 {1,950}
RSD120-Λ RSD120NP-Λ 167  {17,000} 30.4 {3,100} 25.5 {2,600}
RSD140-Λ RSD140NP-Λ 216  {22,000} 40.2 {4,100} 34.3 {3,500}
Dimensions-mm
Chain No. Approx. Mass
kg/m
Number of Links per unit Max. Allowable Chain Speed
m/min.
Standard Nickel Plated
RSD40-Λ RSD40NP-Λ 0.70 240 150
RSD50-Λ RSD50NP-Λ 1.11 192 135
RSD60-Λ RSD60NP-Λ 1.72 160 120
RSD80-Λ RSD80NP-Λ 2.77 120 90
RSD100-Λ RSD100NP-Λ 4.30 96 80
RSD120-Λ RSD120NP-Λ 6.40 80 50
RSD140-Λ RSD140NP-Λ 8.10 68 50
BS Lambda
Dimensions-mm
Chain No. Pitch
P
Roller Dia.
R
Width between Roller Link Plates
W
RSD08B-Λ 12.70 8.51 7.75
RSD10B-Λ 15.875 10.16 9.65
RSD12B-Λ 19.05 12.07 11.68
RSD16B-Λ 25.40 15.88 17.02
Dimensions-mm
Chain No. Link Plate
Thickness
T1
Thickness
T2
Height
H
Height
h
RSD08B-Λ 1.5 2.0 11.8 10.4
RSD10B-Λ 2.0 2.0 15.0 13.0
RSD12B-Λ 2.4 2.4 18.1 15.6
RSD16B-Λ 3.2 3.4 24.1 20.8
Dimensions-mm
Chain No. Pin
Dia.
D
From Pin Head to C.L.
L1
From Pin end to C.L.
L2
From Pin end to C.L.
L
RSD08B-Λ 3.97 8.78 10.45 20.0
RSD10B-Λ 5.09 10.3 12.0 22.5
RSD12B-Λ 5.96 12.4 14.3 28.9
RSD16B-Λ 7.94 17.15 20.25 39.9
Dimensions-mm
Chain No. Average Tensile Strength
kN {kgf}
Approx. Mass
kg/m
RSD08B-Λ 18.8 {1,920} 0.70
RSD10B-Λ 26.0 {2,650} 1.04
RSD12B-Λ 33.3 {3,400} 1.50
RSD16B-Λ 73.5 {7,490} 2.81
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