BS N.E.P. Chain

Tsubaki BS N.E.P. Chain

BS N.E.P. Chain is a Tsubaki BS chain that has undergone a special surface treatment. The link plates, bushes and bearing pins have a special three stage layer applied in order to provide the maximum protection from the operating or environmental conditions. (Spring clips are SUS301). N.E.P. Rollers have a special coating designed to resist the corrosive conditions as well as the severe dynamic contact between roller and sprocket.

This chain is suitable for use in environments exposed to seawater, acid-rain and other adverse weather conditions. This chain does not contain any chemically hazardous substances such as Hexavalent Chromium, Lead, Cadmium and Mercury as regulated by RoHS√. The kilowatt ratings are the same as those of the corresponding BS chain with a working temperature range: -10°C to +150°C. Above +60°C a special high-temperature lubrication is required. Of course, BS Lambda N.E.P. chain is also available.

Single Strand Details

Tsubaki BS N.E.P. Chain Tsubaki BS N.E.P. Chain
Dimensions-mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RF06B-NEP-1 9.525 3/8" 6.35 5.72
RS08B-NEP-1 12.70 1/2" 8.51 7.75
RS10B-NEP-1 15.875 5/8" 10.16 9.65
RS12B-NEP-1 19.05 3/4" 12.07 11.68
RS16B-NEP-1 25.40 1" 15.88 17.02
RS20B-NEP-1 31.75 1 1/4" 19.05 19.56
RS24B-NEP-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-NEP-1 3.28 6.35 7.65 14.20 1.30 1.00 8.20
RS08B-NEP-1 4.45 8.40 10.00 18.40 1.60 1.60 11.80
RS10B-NEP-1 5.08 9.55 11.25 21.10 1.50 1.50 14.70
RS12B-NEP-1 5.72 11.20 13.10 24.80 1.80 1.80 16.10
RS16B-NEP-1 8.28 17.75 19.95 38.90 4.00 3.20 21.00
RS20B-NEP-1 10.19 19.90 23.10 46.95 4.40 3.40 26.00
RS24B-NEP-1 14.63 26.65 31.85 62.00 6.00 5.60 33.44
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Min. Tensile Strength acc. to Tsubaki
kN		 Av. Tensile Strength acc. to Tsubaki
kN		 Approx. Mass
kg/m
RF06B-NEP-1 - 8.9 9.0 9.9 0.39
RS08B-NEP-1 - 17.8 19.0 20.9 0.70
RS10B-NEP-1 - 22.2 23.0 25.3 0.95
RS12B-NEP-1 - 28.9 31.0 34.1 1.25
RS16B-NEP-1 - 60.0 70.0 77.0 2.70
RS20B-NEP-1 - 95.0 98.1 108.0 3.85
RS24B-NEP-1 - 160.0 167.0 184.0 7.45

Double Strand Details

Tsubaki BS N.E.P. Chain Tsubaki BS N.E.P. Chain
Dimensions-mm
Tsubaki Chain No. Pitch
p		 Roller Diameter
d1		 Inner Width
b1
RF06B-NEP-2 9.525 3/8" 6.35 5.72
RS08B-NEP-2 12.70 1/2" 8.51 7.75
RS10B-NEP-2 15.875 5/8" 10.16 9.65
RS12B-NEP-2 19.05 3/4" 12.07 11.68
RS16B-NEP-2 25.40 1" 15.88 17.02
RS20B-NEP-2 31.75 1 1/4" 19.05 19.56
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-NEP-2 3.28 11.43 12.57 - 1.30 1.00 8.20
RS08B-NEP-2 4.45 15.30 16.90 33.60 1.60 1.60 11.80
RS10B-NEP-2 5.08 17.85 19.55 39.40 1.50 1.50 14.70
RS12B-NEP-2 5.72 20.85 22.75 46.30 1.80 1.80 16.10
RS16B-NEP-2 8.28 33.55 35.75 73.80 4.00 3.20 21.00
RS20B-NEP-2 10.19 38.25 41.45 84.85 4.40 3.40 26.00
Dimensions in mm
Tsubaki Chain No. Transverse Pitch
pt		 Min. Tensile Strength acc. to ISO 606
kN		 Min. Tensile Strength acc. to Tsubaki
kN		 Av. Tensile Strength acc. to Tsubaki
kN		 Approx. Mass
kg/m
RF06B-NEP-2 10.24 16.9 17.0 18.7 0.75
RS08B-NEP-2 13.92 31.1 32.0 35.2 1.35
RS10B-NEP-2 16.59 44.5 44.5 49.0 1.85
RS12B-NEP-2 19.46 57.8 61.0 67.1 2.50
RS16B-NEP-2 31.88 106.0 128.0 141.0 5.40
RS20B-NEP-2 36.45 170.0 197.0 217.0 7.65