Tsubaki: ANSI Neptune™ Chain

ANSI Neptune™

ANSI Neptune™ Chain

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

Single Strand

For more detailed information and to download CAD data about Surface treated drive chain NEP Series NEPTUNE click here

Single Strand Details

Dimensions-mm
Tsubaki Chain No.	Pitch (P)		Roller Diameter	Inner Width
Tsubaki Chain No.	mm	Inch	R	W
RS35-NEP-1	9.525	⅜"	5.08	4.78
RS40-NEP-1	12.70	½"	7.92	7.95
RS50-NEP-1	15.875	⅝"	10.16	9.53
RS60-NEP-1	19.05	¾"	11.91	12.70
RS80-NEP-1	25.40	1"	15.88	15.88

Dimensions in mm
Tsubaki Chain No.	Pin				Link Plate
	Diameter	Length		Offset Pin Length	Thickness	Height
	∅D	L₁	L₂	L	T	h	H
RS35-NEP-1	3.59	5.85	6.85	13.50	1.25	7.80	9.00
RS40-NEP-1	3.97	8.25	9.95	18.00	1.50	10.40	12.00
RS50-NEP-1	5.09	10.30	11.90	22.60	2.00	13.00	15.00
RS60-NEP-1	5.96	12.85	14.75	28.20	2.40	15.60	18.10
RS80-NEP-1	7.94	16.25	19.25	36.00	3.20	20.80	24.10

Dimensions in mm
Tsubaki Chain No.	Min. Tensile Strength kN	Max. Allowable Load kN	Approx. Mass Kg/m	Number of links per unit
RS35-NEP-1	9.81	2.16	0.33	320
RS40-NEP-1	17.7	3.63	0.64	240
RS50-NEP-1	28.4	6.37	1.04	192
RS60-NEP-1	40.2	8.83	1.53	160
RS80-NEP-1	71.6	14.7	2.66	120

Connecting links are clip type for sizes RS35-NEP to RS60-NEP, and cotter type for size RS80-NEP.
When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
For details on corrosion resistance selection, please consult our Corrosion Resistance Guide.

Download the Neptune™ catalog in PDF, here.