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Lube-Free Roller Chains

BS Lambda Chain

TSUBAKI Chain Number JIS No. Pitch
P
Roller
Diameter
R
Inner Width of
Inner Link
W
Plates Pins
Single-strand Double-strand Thickness T1 Thickness T2 Height H Height h Diameter L1
2-strand value in ()
L2
2-strand value in ()
RF06B-LM-1 RF06B-LM-2 06B 9.525 6.35 5.72 1.0 1.3 8.2 8.2 3.28 6.1 (11.2) 7.7 (12.8)
RF08B-LM-1 RF08B-LM-2 08B 12.70 8.51 7.75 1.6 1.6 12.0 10.4 4.45 8.4 (15.3) 10.0 (16.9)
RF10B-LM-1 RF10B-LM-2 10B 15.875 10.16 9.65 1.5 1.5 14.7 13.7 5.08 9.55 (17.85) 11.25 (19.55)
RF12B-LM-1 RF12B-LM-2 12B 19.05 12.07 11.68 1.8 1.8 16.1 16.1 5.72 11.1 (20.85) 13.0 (22.75)
RF16B-LM-1 RF16B-LM-2 16B 25.40 15.88 17.02 3.2 4.0 21.0 21.0 8.28 17.75 (33.55) 19.95 (35.75)
RF20B-LM-1 RF20B-LM-2 20B 31.75 19.05 19.56 3.4 4.4 26.4 26.4 10.19 19.9 (38.25) 23.1 (41.45)
RF24B-LM-1 RF24B-LM-2 24B 38.10 25.40 25.40 5.6 6.0 33.4 31.2 14.63 26.65 (50.8) 31.85 (56.0)
TSUBAKI Chain Number Offset Pin
LengthL2-strand
value in ()
Maximum Tensile Strength kN{kgf} Approximate Masskg/m2-strand calue in () Links
Per
Unit
Transverse
Pitch
C
Single-strand Double-strand Single-strand Double-strand
RF06B-LM-1 RF06B-LM-2 15.1 ( 25.9) 8.90 {910} 16.9 {1720} 0.39 ( 0.75) 320 10.24
RF08B-LM-1 RF08B-LM-2 18.6 ( 34.5) 17.8 {1820} 31.1 {3170} 0.70 ( 1.35) 240 13.92
RF10B-LM-1 RF10B-LM-2 20.8 ( 39.4) 22.2 {2260} 44.5 {4540} 0.95 ( 1.85) 192 16.59
RF12B-LM-1 RF12B-LM-2 24.4 ( 45.9) 28.9 {2950} 57.8 {5890} 1.25 ( 2.50) 160 19.46
RF16B-LM-1 RF16B-LM-2 39.3 ( 73.4) 60.0 {6120} 106 {10800} 2.70 ( 5.40) 120 31.88
RF20B-LM-1 RF20B-LM-2 46.6 ( 84.6) 95.0 {9690} 170 {17300} 3.85 ( 7.65) 96 36.45
RF24B-LM-1 RF24B-LM-2 61.7 (112.8) 160 {16300} 280 {28600} 7.45 (14.65) 80 48.36

Note 1. RF06B plate is flat : (picture)

2. Multi-strand RF06B and RS08B chains have one inner plate.

3. Minimum tensile strength of pin gear attachment chains differs from those above. Contact Tsubaki for details.

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Curved Lambda Chain

TSUBAKI Chain Number Pitch
P
Roller
Diameter
R
Inner Width of
Inner Link
W
Plates Pins
Thickness T1 Thickness T2 Height H Height h Diameter D L1 + L2 L1 L2
RS40-LMC-CU-1 12.70 7.92 7.95 1.5 2.0 12.0 10.4 3.59 18.2 8.45 9.75
RS50-LMC-CU-1 15.875 10.16 9.53 2.0 2.4 15.0 13.0 4.45 22.0 10.3 11.7
RS60-LMC-CU-1 19.05 11.91 12.70 2.4 3.2 18.1 15.6 5.35 5.35 12.95 14.55
TSUBAKI Chain Number Average Tensile StrengthkN {kgf} Maximum Allowable Load
Tension
kN{kgf}
Approximate 

Mass kg/m

Number of Links
Per Unit
Allowable Speed
m/min
RS40-LMC-CU-1 12.4 {1260} 1.86 {190} 0.61 240 400
RS50-LMC-CU-1 19.2 {1960} 2.84 {290} 1.01 192 500
RS60-LMC-CU-1 27.9 {2840} 4.02 {410} 1.40 160 600
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Heavy Duty Lambda Chain

TSUBAKI Chain NumberNormal Specification Pitch
P
Roller
Diameter
R
Inner Width of
Inner Link
W
Plates Pins Transverse
Pitch
C
Thickness T1 Thickness T2 Height H Height h Diameter D L1 L2
RS40-LMD-H-2 12.70 7.92 7.55 2.0 2.0 12.0 10.4 3.97 17.5 19.15 16.4
RS50-LMD-H-2 15.875 10.16 9.26 2.4 2.4 15.0 13.0 5.09 20.95 22.65 19.7
RS60-LMD-H-2 19.05 11.91 12.28 3.2 3.2 18.1 15.6 5.96 27.55 29.45 26.1
RS80-LMD-H-2 25.40 15.88 15.48 4.0 4.0 24.4 20.8 7.94 34.6 37.2 32.6
RS100-LMD-H-2 31.75 19.05 18.70 4.8 4.8 30.1 26.0 9.54 41.35 44.05 39.1
TSUBAKI Chain Number
Normal Specification
Average Tensile StrengthkN {kgf} Maximum Allowable Load
Tension
kN{kgf}
Approximate Masskg/m Number of Links
Per Unit
Allowable Speed
m/min
RS40-LMD-H-2 38.2 {3900} 6.17 {629} 1.57 240 150
RS50-LMD-H-2 62.8 {6400} 10.8 {6400} 2.35 192 135
RS60-LMD-H-2 88.3 {900 } 15.0 {1530} 3.59 160 120
RS80-LMD-H-2 157 {16000} 25.0 {2550} 6.18 120 90
RS100-LMD-H-2 235 {24000} 38.3 {3910} 9.03 96 80

Note: 1.Maximum allowable load when using a one-pitch offset link (OL) is 65% that of the above values.
2.Offset links are not available for double-strand chains. Chains should be designed for an even number of links.

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X-Lambda Chain (X-Λ )

TSUBAKI Chain Number Pitch
P
Roller
Diameter
R
Inner Width of
Inner Link
W
Plates Pins
Thickness T1 Thickness T2 Height H Height h Diameter D L1 L2
RS40-LMDX-1 12.70 7.92 7.55 1.5 2.0 12.0 10.4 3.97 9.4 11.1
RS50-LMDX-1 15.875 10.16 9.26 2.0 2.4 15.0 13.0 5.09 11.4 13.1
RS60-LMDX-1 19.05 11.91 12.28 2.4 3.2 18.1 15.6 5.96 14.8 16.5
RS80-LMDX-1 25.40 15.88 15.48 3.2 4.0 24.4 20.8 7.94 18.3 20.9
RS100-LMDX-1 31.75 19.05 18.70 4.0 4.8 30.1 26.0 9.54 21.8 24.5
RS120-LMDX-1 38.10 22.23 24.75 4.8 5.6 36.2 31.2 11.11 26.7 30.75
TSUBAKI Chain Number Average Tensile StrengthkN {kgf} Maximum Allowable Load
kN{kgf}
Approximate Masskg/m Number of Links
Per Unit
Allowable Speed
m/min
RS40-LMDX-1 19.1{1950}  3.63{370} 0.70  240 150
RS50-LMDX-1 31.4{3200} 6.37{650} 1.11  192 135
RS60-LMDX-1 44.1{4500}  8.83{900} 1.72  160 120
RS80-LMDX-1 78.5{8000}  14.7{1500} 2.77  120 90
RS100-LMDX-1 118{12000} 22.6{2300} 4.30 96 80
RS120-LMDX-1 167{17000} 30.4{3100} 6.40 80 50
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Surface Treated Lambda Chain NP Specification

TSUBAKI Chain Number Pitch
P
Roller
Diameter
R
Inner Width of
Inner Link
W
Plates Pins Offset PinLengthL 
Single-strand Double-strand ThicknessT1 ThicknessT2 HeightH Heighth DiameterD  L12-strand value in () L22-strand value in ()
RS40-LMD-NP-1 RS40-LMD-NP-2 12.70 7.92 7.55 1.5 2.0 12.0 10.4 3.97 8.75 (16.5) 10.45 (18.1) 20.0
RS50-LMD-NP-1 RS50-LMD-NP-2 15.875 10.16 9.26 2.0 2.4 15.0 13.0 5.09 10.75 (20.2) 12.45 (22.0) 24.0
RS60-LMD-NP-1 RS60-LMD-NP-2 19.05 11.91 12.28 2.4 3.2 18.1 15.6 5.96 13.70 (26.05) 15.75 (28.05) 32.0
RS80-LMD-NP-1 RS80-LMD-NP-2 25.40 15.88 15.48 3.2 4.0 24.4 20.8 7.94 17.15 (32.7) 20.25 (35.9) 39.9
RS100-LMD-NP-1 RS100-LMD-NP-2 31.75 19.05 18.70 4.0 4.8 30.1 26.0 9.54 20.65 (39.5) 23.85 (42.5) 47.5
RS120-LMD-NP-1   38.10 22.23 24.75 4.8 5.6 36.2 31.2 11.11 25.75 29.95 59.0
RS140-LMD-NP-1   44.45 25.40 24.75 5.6 6.4 42.2 36.4 12.71 27.70 32.20 63.7

TSUBAKI Chain Number Average Tensile StrengthkN {kgf}2-strand value in () Maximum Allowable Load kN{kgf} Approximate Masskg/m2-strand calue in () LinksPerUnit AllowableSpeedm/min TransversePitchC
Single-strand Double-strand Single-strand Double-strand
RS40-LMD-NP-1 RS40-LMD-NP-2 19.1{1950} (38.2{3900}) 3.63{370} 5.08{518} 0.70 (1.4) 240 150 15.4
RS50-LMD-NP-1 RS50-LMD-NP-2 31.4{3200} (62.8{6400}) 6.37{650} 8.92{910} 1.11 (2.2) 192 135 19.0
RS60-LMD-NP-1 RS60-LMD-NP-2 44.1{4500} (88.3{9000}) 8.83{900} 12.4{1260} 1.72 (3.4) 160 120 24.52
RS80-LMD-NP-1 RS80-LMD-NP-2 78.5{8000} (157{16000}) 14.7{1500} 20.6{2100} 2.77 (5.5) 120 90 31.1
RS100-LMD-NP-1 RS100-LMD-NP-2 118{12000} (235{24000}) 22.6{2300} 31.6{3220} 4.30 (8.6) 96 80 37.6
RS120-LMD-NP-1   167{17000} 30.4{3100}   6.4 80 50  
RS140-LMD-NP-1   216{22000} 40.2{4100}   8.1 68 50  

Note: 1.Maximum allowable load when using a one-pitch offset link (OL) is 65% that of the above values.
2.Offset links are not available for double-strand chains. Chains should be designed for an even number of links.

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Lambda Chain

TSUBAKI Chain Number Pitch
P
Roller
Diameter
R
Inner Width of
Inner Link
W
Plates Pins Offset
PinLengthL 
Single-strand Double-strand Thickness
T1
Thickness
T2
HeightH Height
h
Diameter
L12-strand
value in ()
L22-strand
value in ()
RS40-LMD-1 RS40-LMD-2 12.70 7.92 7.55 1.5 2.0 12.0 10.4 3.97 8.75 (16.5) 10.45 (18.1) 20.0
RS50-LMD-1 RS50-LMD-2 15.875 10.16 9.26 2.0 2.4 15.0 13.0 5.09 10.75 (20.2) 12.45 (22.0) 24.0
RS60-LMD-1 RS60-LMD-2 19.05 11.91 12.28 2.4 3.2 18.1 15.6 5.96 13.70 (26.05) 15.75 (28.05) 32.0
RS80-LMD-1 RS80-LMD-2 25.40 15.88 15.48 3.2 4.0 24.4 20.8 7.94 17.15 (32.7) 20.25 (35.9) 39.9
RS100-LMD-1 RS100-LMD-2 31.75 19.05 18.70 4.0 4.8 30.1 26.0 9.54 20.65 (39.5) 23.85 (42.5) 47.5
RS120-LMD-1   38.10 22.23 24.75 4.8 5.6 36.2 31.2 11.11 25.75 29.95 59.0
RS140-LMD-1   44.45 25.40 24.75 5.6 6.4 42.2 36.4 12.71 27.70 32.20 63.7

TSUBAKI Chain Number Average Tensile
Strength
kN {kgf}2-strand value in ()
Maximum Allowable Load kN{kgf} Approximate Masskg/m2-strand calue in () LinksPerUnit AllowableSpeedm/min TransversePitchC
Single-strand Double-strand Single-strand Double-strand
RS40-LMD-1 RS40-LMD-2 19.1{1950} (38.2{3900}) 3.63{370} 5.08{518} 0.70 (1.4) 240 150 15.4
RS50-LMD-1 RS50-LMD-2 31.4{3200} (62.8{6400}) 6.37{650} 8.92{910} 1.11 (2.2) 192 135 19.0
RS60-LMD-1 RS60-LMD-2 44.1{4500} (88.3{9000}) 8.83{900} 12.4{1260} 1.72 (3.4) 160 120 24.52
RS80-LMD-1 RS80-LMD-2 78.5{8000} (157{16000}) 14.7{1500} 20.6{2100} 2.77 (5.5) 120 90 31.1
RS100-LMD-1 RS100-LMD-2 118{12000} (235{24000}) 22.6{2300} 31.6{3220} 4.30 (8.6) 96 80 37.6
RS120-LMD-1   167{17000} 30.4{3100}   6.4 80 50  
RS140-LMD-1   216{22000} 40.2{4100}   8.1 68 50  

Note: 1.Maximum allowable load when using a one-pitch offset link (OL) is 65% that of the above values.
2.Offset links are not available for double-strand chains. Chains should be designed for an even number of links.

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