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Nickel Plated
BS NP Chain


 

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ANSI NP

BS NP

BS NP Chain

BS NP Chain is a Tsubaki BS chain that has been plated with nickel. NP Chain has a light corrosion resistance and an attractive appearance. NP Chain is suitable for outdoor conditions exposed to water. There is a 15% reduction in Maximum Allowable Load compared to the corresponding BS chain, so please take this into account when making your chain selection. It has a working temperature range of: -10°C to +60°C. Of course, BS Lambda NP Chain is also available.

Single Strand Details

np
tsubaki-bs-np
Dimensions-mm
Tsubaki Chain No. Pitch (P) Roller Diameter Inner Width
mm Inch R W
RF06B-NP-1 9.525 ⅜" 6.35 5.72
RS08B-NP-1 12.70 ½" 8.51 7.75
RS10B-NP-1 15.875 ⅝" 10.16 9.65
RS12B-NP-1 19.05 ¾" 12.07 11.68
RS16B-NP-1 25.40 1" 15.88 17.02
RS20B-NP-1 31.75 1¼" 19.05 19.56
RS24B-NP-1 38.10 1½" 25.40 25.40
RS28B-NP-1 44.45 1¾" 27.94 30.99
RS32B-NP-1 50.80 2" 29.21 30.99
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter Length Offset Pin
Length		 Thickness Height
∅D L1 L2 L T1 T2 H
RF06B-NP-1 3.27 6.10 7.70 15.10 1.00 1.30 8.20
RS08B-NP-1 4.45 8.40 10.00 18.60 1.60 1.60 11.80
RS10B-NP-1 5.08 9.55 11.25 20.80 1.50 1.50 14.70
RS12B-NP-1 5.72 11.10 13.00 24.40 1.80 1.80 16.10
RS16B-NP-1 8.28 17.75 19.95 41.10 3.20 4.00 21.00
RS20B-NP-1 10.19 19.90 23.10 46.60 3.40 4.40 26.00
RS24B-NP-1 14.63 26.65 31.85 61.70 5.60 6.00 33.40
RS28B-NP-1 15.90 32.45 37.45 74.40 6.30 7.50 36.40
RS32B-NP-1 17.81 32.10 37.70 73.30 6.30 7.00 42.20
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C		 ISO ”B”
Tensile Strength
kN		 TSUBAKI
Min. Tensile Strength
kN		 Approx. mass

Kg/m
RF06B-NP-1 - 8.90 9.00 0.39
RS08B-NP-1 - 17.80 19.00 0.70
RS10B-NP-1 - 22.20 23.00 0.95
RS12B-NP-1 - 28.90 31.00 1.25
RS16B-NP-1 - 60.00 70.00 2.70
RS20B-NP-1 - 95.00 98.10 3.85
RS24B-NP-1 - 160.0 167.0 7.45
RS28B-NP-1 - 200.0 200.0 9.45
RS32B-NP-1 - 250.0 255.0 10.25
  • RF06B-NP chain has flat-shaped link plates.
  • Connecting links are clip type for sizes up to RS16B-NP-1, and cotter type for sizes RS16B-NP-1 to RS32B-NP-1.
  • Center sink riveting is applied to RS08B-NP-1 and to RS16B-NP-1 single-strand chain.
  • Double stake riveting is applied to all other sizes single-strand chain.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • For details on corrosion resistance selection, please see our Corrosion Resistance Guide.

Double Strand Details

np2
tsubaki-bs-np
Dimensions-mm
Tsubaki Chain No. Pitch (P) Roller Diameter Inner Width
mm Inch R W
RF06B-NP-2 9.525 ⅜" 6.35 5.72
RS08B-NP-2 12.70 ½" 8.51 7.75
RS10B-NP-2 15.875 ⅝" 10.16 9.65
RS12B-NP-2 19.05 ¾" 12.07 11.68
RS16B-NP-2 25.40 1" 15.88 17.02
RS20B-NP-2 31.75 1¼" 19.05 19.56
RS24B-NP-2 38.10 1½" 25.40 25.40
RS28B-NP-2 44.45 1¾" 27.94 30.99
RS32B-NP-2 50.80 2" 29.21 30.99
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter Length Offset Pin
Length		 Thickness Height
∅D L1 L2 L T1 T2 H
RF06B-NP-2 3.27 11.20 12.80 - 1.00 1.30 8.20
RS08B-NP-2 4.45 15.30 16.90 34.50 1.60 1.60 11.80
RS10B-NP-2 5.08 17.85 19.55 39.40 1.50 1.50 14.70
RS12B-NP-2 5.72 20.85 22.75 45.90 1.80 1.80 16.10
RS16B-NP-2 8.28 33.55 35.75 75.20 3.20 4.00 21.00
RS20B-NP-2 10.19 38.25 41.45 84.60 3.40 4.40 26.00
RS24B-NP-2 14.63 50.80 56.00 112.80 5.60 6.00 33.40
RS28B-NP-2 15.90 62.15 67.15 136.85 7.50 6.30 36.40
RS32B-NP-2 17.81 61.25 66.85 134.50 6.30 7.00 42.20
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C		 ISO ”B”
Tensile Strength
kN		 TSUBAKI
Min. Tensile Strength
kN		 Approx. mass

Kg/m
RF06B-NP-2 10.24 16.90 17.00 0.75
RS08B-NP-2 13.92 31.10 32.00 1.35
RS10B-NP-2 16.59 44.50 44.50 1.85
RS12B-NP-2 19.46 57.80 61.00 2.50
RS16B-NP-2 31.88 106.0 128.0 5.40
RS20B-NP-2 36.45 170.0 197.0 7.65
RS24B-NP-2 48.36 280.0 335.0 14.65
RS28B-NP-2 59.56 360.0 374.0 18.80
RS32B-NP-2 58.55 450.0 485.0 21.10
  • RF06B-NP chain has flat-shaped link plates.
  • Connecting links are clip type for sizes up to RS16B-NP-2, and cotter type for sizes RS16B-NP-2 to RS32B-NP-2.
  • Intermediate plate of multi strand RF06B-NP-2 and RS08B-NP-2 chain is a solid plate.
  • Double stake riveting is applied to all sizes multi-strand chain.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • For details on corrosion resistance selection, please see our Corrosion Resistance Guide.

Triple Strand Details

np3
tsubaki-bs-np
Dimensions-mm
Tsubaki Chain No. Pitch (P) Roller Diameter Inner Width
mm Inch R W
RF06B-NP-3 9.525 ⅜" 6.35 5.72
RS08B-NP-3 12.70 ½" 8.51 7.75
RS10B-NP-3 15.875 ⅝" 10.16 9.65
RS12B-NP-3 19.05 ¾" 12.07 11.68
Dimensions in mm
Tsubaki Chain No. Pin Link Plate
Diameter Length Offset Pin
Length		 Thickness Height
∅D L1 L2 L T1 T2 H
RF06B-NP-3 3.27 16.40 17.90 - 1.00 1.30 8.20
RS08B-NP-3 4.45 22.25 23.85 48.40 1.60 1.60 11.80
RS10B-NP-3 5.08 26.15 27.85 56.00 1.50 1.50 14.70
RS12B-NP-3 5.72 30.60 32.50 65.40 1.80 1.80 16.10
Dimensions in mm
Tsubaki Chain No. Transverse Pitch

C		 ISO ”B”
Tensile Strength
kN		 TSUBAKI
Min. Tensile Strength
kN		 Approx. mass

Kg/m
RF06B-NP-3 10.24 24.90 24.90 1.11
RS08B-NP-3 13.92 44.50 47.50 2.00
RS10B-NP-3 16.59 66.70 66.80 2.80
RS12B-NP-3 19.46 86.70 92.00 3.80
  • RF06B-NP chain has flat-shaped link plates.
  • Connecting links are clip type for sizes up to RS12B-NP-3.
  • When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
  • For details on corrosion resistance selection, please see our Corrosion Resistance Guide.