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  • Lambda Chain

Lambda Chain

Coating the inner and outer plates black has given the chain slight corrosion resistance and a high-grade finish.

We reviewed the material and processing that go into our special oil-impregnated bushes, and improved the lubricant.

Lambda Chain

Products News

RS160-LMD sizes have been added to Lambda Chain Series
RS Double Strand Compatible Lambda Chain
Frequently updated
Notice: Information on catalog corrections >> Click for more details

1. Basic Structure of Lambda Chain

Structure of Lambda Chain
Standard specifications
Inner and outer plates are black oxide coated.
Nickel plated specifications
Uses a special nickel plating (except on the bush).

Points of caution

To ensure compatibility with RS Roller Chain, the inner plate is one size thicker with the same tensile strength as RS Roller Chain. Thus, pins are longer than with the RS Roller Chain, so interference with equipment should be checked.

2. Features of Lambda Chain

Long life, lube free
The special oil impregnated bushes provides long service life, even without additional lubrication.
Improved the lubricant used in the special oil impregnated bushes.
Used the compliant lubrication to NSF H1 as special contained bush. It also can be used on food machinery. *
Compatible with standard roller chains. (However, there is a difference in their kilowatt ratings.)
Operating temperature range:
-10ºC to 150ºC.
Single strand chains can use RS Sprockets, but double strand chains require special sprockets due to the size difference of their horizontal pitch (C dimension).

3. RS Double Strand Compatible Lambda Chain

Users of double strand RS Roller Chain can easily make the switch to lube-free operation with RS Double Strand Compatible Lambda Chain.

(1) General use RS sprockets can be used

RS Double Strand Compatible Lambda Chains have the same transverse pitch as RS Roller Chain.

Double Strand RS Roller Chain


Can use standard RS sprockets

RS Double Strand Compatible Lambda Chain


Can use standard RS sprockets

Conventional double strand Lambda Chain


Requires special sprockets for Lambda Chain

Cost Comparison

Cost Comparison

sprocket pic.

No need to replace with a special sprocket for Lambda Chain


Avoid cost increases from changing sprockets

(2) 20% higher kW ratings than conventional specifications (multi-strand factor 1.7)

Greater allowable operating range with RS Double Strand Compatible.

List of multi-strand factors

Chain Multi-strand factor kW ratings (index*)
Double Strand RS Roller Chain 1.7 161
RS Double Strand Compatible Lambda Chain 1.7 121
Conventional double strand Lambda Chain 1.4 100

With conventional double strand Lambda chain as our benchmark of 100

kW ratings

kW ratings

Multi-strand factor

A coefficient used to calculate kW ratings for double strand chain. You can calculate kW ratings by multiplying this factor by the values.

4. Model Numbering Example

RS 80 - LMD - 1
(1) (2) (3)
  • (1) Applicable size: 40, 50, 60, 80, 100, 120, 140, 160*Single strand and RS Double Strand Compatible only
  • (2) LMD-S when RS Double Strand Compatible
  • (3) No. of strands
Model numbers for ordering connecting links (JL) RS80-LMD-1-JL
Model numbers for ordering offset links (OL) RS80-LMD-1-OL

4. Dimensions/Specifications

*Select the model number for detailed information.

Chain Model No.
Single Strand Double Strand Compatible Double Strand (conventional)
RS40-LMD-1 RS40-LMD-S-2 RS40-LMD-2
RS50-LMD-1 RS50-LMD-S-2 RS50-LMD-2
RS60-LMD-1 RS60-LMD-S-2 RS60-LMD-2
RS80-LMD-1 RS80-LMD-S-2 RS80-LMD-2
RS100-LMD-1 RS100-LMD-S-2 RS100-LMD-2
RS120-LMD-1 RS120-LMD-S-2
RS140-LMD-1 RS140-LMD-S-2
RS160-LMD-1 RS160-LMD-S-2

Safety Precautions for Lambda Chain

  • Do not use Lambda Chain if the chain will come in direct contact with food or where coating flakes or wear dust can contaminate food. Also, in non-food applications, appropriately cover the chain or contact a Tsubaki representative about chain selection if using in environments where coating flakes or wear dust present problems. Though nickel is not subject to the japan Food Sanitation Law or the Industry Safety and Health Law, plating on sliding parts can peel.
  • Do not use Lambda Chain where there is the possibility of exposure to chemicals, water, or cleaning/degreasing vapors.
  • Oil might spatter depending on the usage conditions.
  • Please be aware that NSF H1 non-compliant rust prevention oil and assembly oil may be present on the chain.