BS Lambda N.E.P. Chain
Tsubaki's Lambda Chains were the first in the industry to use a special oil-impregnated bush. Since their launch in 1988, they have been adopted for diverse industries and applications, and their performance has been highly rated. Tsubaki has a wide line-up of lube-free, long life products that help customers reduce costs.
BS Lambda N.E.P. Chain is a Tsubaki BS Lambda chain that has undergone a special surface treatment. The link plates have a special three stage layer applied in order to provide the maximum protection from the operating or environmental conditions. (Spring clips are SUS301). Both BS Lambda N.E.P. rollers and pins have undergone 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.
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√ RoHS = Restriction of Hazardous Substances
Single Strand Details
Tsubaki BS Lambda N.E.P. Chain
| Tsubaki Chain No. | Pitch p |
Roller Diameter d1 |
Inner Width b1 |
|
|---|---|---|---|---|
| RS06B-LM-NEP-1 | 9.525 | 3/8" | 6.35 | 5.72 |
| RS08B-LM-NEP-1 | 12.70 | 1/2" | 8.51 | 7.75 |
| RS10B-LM-NEP-1 | 15.875 | 5/8" | 10.16 | 9.65 |
| RS12B-LM-NEP-1 | 19.05 | 3/4" | 12.07 | 11.68 |
| RS16B-LM-NEP-1 | 25.40 | 1" | 15.88 | 17.02 |
| RS20B-LM-NEP-1 | 31.75 | 1 1/4" | 19.05 | 19.56 |
| RS24B-LM-NEP-1 | 38.10 | 1 1/2" | 25.40 | 25.40 |
| Tsubaki Chain No. | Pin | Link Plate | |||||
|---|---|---|---|---|---|---|---|
| Diameter d2 |
Length L1 |
Length L2 |
Length L |
Thickness T |
Thickness t |
Height H (max.) |
|
| RS06B-LM-NEP-1 | 3.28 | 6.10 | 7.70 | 15.10 | 1.30 | 1.00 | 8.20 |
| RS08B-LM-NEP-1 | 4.45 | 8.40 | 10.00 | 18.60 | 1.60 | 1.60 | 12.00 |
| RS10B-LM-NEP-1 | 5.08 | 9.55 | 11.25 | 20.80 | 1.50 | 1.50 | 14.70 |
| RS12B-LM-NEP-1 | 5.72 | 11.10 | 13.00 | 24.40 | 1.80 | 1.80 | 16.10 |
| RS16B-LM-NEP-1 | 8.28 | 17.75 | 19.95 | 39.30 | 4.00 | 3.20 | 21.00 |
| RS20B-LM-NEP-1 | 10.19 | 19.90 | 23.10 | 46.60 | 4.40 | 3.40 | 26.40 |
| RS24B-LM-NEP-1 | 14.63 | 26.65 | 31.85 | 61.70 | 6.00 | 5.60 | 33.40 |
| Tsubaki Chain No. | Transverse Pitch pt | Min. Tensile Strength acc. to ISO 606 kN | Approx. Mass kg/m |
|---|---|---|---|
| RS06B-LM-NEP-1 | - | 8.9 | 0.39 |
| RS08B-LM-NEP-1 | - | 17.8 | 0.70 |
| RS10B-LM-NEP-1 | - | 22.2 | 0.95 |
| RS12B-LM-NEP-1 | - | 28.9 | 1.25 |
| RS16B-LM-NEP-1 | - | 60.0 | 2.70 |
| RS20B-LM-NEP-1 | - | 95.0 | 3.85 |
| RS24B-LM-NEP-1 | - | 160.0 | 7.45 |
- Connecting links are clip type for sizes up to RS16B-LM-NEP, and cotter type for sizes RS20B-LM-NEP to RS24B-LM-NEP.
- RF06B-LM-NEP chain has flat shaped link plates.
- Centre sink riveting is applied for RS08B-LM-NEP-1 to RS16B-LM-NEP-1. Double stake riveting is applied to all other sizes including multi-strand chain.
- Warning: previous generations of Lambda chain can not be connected with the above chains due to different dimensions.
- When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
- The listed sizes are stock items, other chain sizes are available on request.
Double Strand Details
Tsubaki BS Lambda N.E.P. Chain
| Tsubaki Chain No. | Pitch p |
Roller Diameter d1 |
Inner Width b1 |
|
|---|---|---|---|---|
| RS08B-LM-NEP-2 | 12.70 | 1/2" | 8.51 | 7.75 |
| RS10B-LM-NEP-2 | 15.875 | 5/8" | 10.16 | 9.65 |
| RS12B-LM-NEP-2 | 19.05 | 3/4" | 12.07 | 11.68 |
| RS16B-LM-NEP-2 | 25.40 | 1" | 15.88 | 17.02 |
| Tsubaki Chain No. | Pin | Link Plate | |||||
|---|---|---|---|---|---|---|---|
| Diameter d2 |
Length L1 |
Length L2 |
Length L |
Thickness T |
Thickness t |
Height H (max.) |
|
| RS08B-LM-NEP-2 | 4.45 | 15.30 | 16.90 | 34.50 | 1.60 | 1.60 | 12.00 |
| RS10B-LM-NEP-2 | 5.08 | 17.85 | 19.55 | 39.40 | 1.50 | 1.50 | 14.70 |
| RS12B-LM-NEP-2 | 5.72 | 20.85 | 22.75 | 45.90 | 1.80 | 1.80 | 16.10 |
| RS16B-LM-NEP-2 | 8.28 | 33.55 | 35.75 | 73.40 | 4.00 | 3.20 | 21.00 |
| Tsubaki Chain No. | Transverse Pitch pt | Min. Tensile Strength acc. to ISO 606 kN | Approx. Mass |
|---|---|---|---|
| RS08B-LM-NEP-2 | 13.92 | 31.1 | 1.35 |
| RS10B-LM-NEP-2 | 16.59 | 44.5 | 1.85 |
| RS12B-LM-NEP-2 | 19.46 | 57.8 | 2.50 |
| RS16B-LM-NEP-2 | 31.88 | 106.0 | 5.40 |
- Connecting links are clip type for sizes up to RS16B-LM-NEP, and cotter type for sizes RS20B-LM-NEP to RS24B-LM-NEP.
- RF06B-LM-NEP chain has flat shaped link plates.
- Intermediate plate of RF06B-LM-NEP-2 and RS08B-LM-NEP-2 is a solid plate.
- Warning: previous generations of Lambda chain can not be connected with the above chains due to different dimensions.
- Centre sink riveting is applied for RS08B-LM-NEP-1 to RS16B-LM-NEP-1. Double stake riveting is applied to all other sizes including multi-strand chain.
- When a single pitch offset link is used, please calculate a 35% reduction of the fatigue strength.
- The listed sizes are stock items, other chain sizes are available on request.
- To download any of the N.E.P. catalogues in PDF, click here
