Tsubaki product selection

Heavy-duty Lambda Chain

High-strength Lube-free chain (2-strand only)
This Lambda Chain has the same strength as RS roller chain, even in a double-strand configuration.

Features

- Ensures the same strength as general-purpose roller chains

Just like the inner plates, the outer plates are one size thicker, ensuring the same strength as a general-purpose roller chain even in double-strand specifications.
・Improved lubricant for special oil-impregnated bush

Uses NSF H1* compliant lubricant, which can also be used in food processing machinery.

*NSF H1 is a standard set by NSF that states "lubricants that can be used in areas where accidental contact with food may occur."
・Basic structure

*The thickness of the inner plate is increased by one size to ensure strength such as tensile strength.
Therefore, the pin length is longer than that of general-purpose roller chains, so please check for interference with equipment when replacing.

When selecting sprocket specifications

It is necessary to select a sprocket specification that corresponds to the customer's operating environment and chain specifications.

Heavy-duty Lambda Chain require special sprockets.

Please contact us for details.

Please see the chain and sprocket compatibility chart here.

Chain and sprocket compatibility table

Catalogs and Instruction Manuals

Product List

*Click to display detailed information.

*The table below includes related products. The model numbers of the products introduced on this page are colored.

Pitch mm	No. of strands	Size & Specifications & No. of strands							Roller diameter mm	Inner link Inner width mm
Pitch mm	No. of strands	Lambda Chain	Surface treated Lambda Chain NP Series	long life Lambda Chain	Lambda Chain cold resistant series	Lambda Chain KF Series	lambda RS-HT chain	lambda RS-HT chain NP Series	Roller diameter mm	Inner link Inner width mm
12.70	1	RS40-LMD-1	RS40-LMDNP-1	RS40-LMDX-1	RS40-LMDKT-1	RS40-LMDKF-1	---	---	7.92	7.55
	2 RS compatible specifications	RS40-LMDS-2	---	---	---	---	---	---
	2	---	---	---	---	---	RS40-LMDH-2	RS40-LMDHNP-2
15.875	1	RS50-LMD-1	RS50-LMDNP-1	RS50-LMDX-1	RS50-LMDKT-1	RS50-LMDKF-1	---	---	10.16	9.26
	2 RS compatible specifications	RS50-LMDS-2	---	---	---	---	---	---
	2	---	---	---	---	---	RS50-LMDH-2	RS50-LMDHNP-2
19.05	1	RS60-LMD-1	RS60-LMDNP-1	RS60-LMDX-1	RS60-LMDKT-1	RS60-LMDKF-1	---	---	11.91	12.28
	2 RS compatible specifications	RS60-LMDS-2	---	---	---	---	---	---
	2	---	---	---	---	---	RS60-LMDH-2	RS60-LMDHNP-2
25.40	1	RS80-LMD-1	RS80-LMDNP-1	RS80-LMDX-1	RS80-LMDKT-1	RS80-LMDKF-1	---	---	15.88	15.48
	2 RS compatible specifications	RS80-LMDS-2	---	---	---	---	---	---
	2	---	---	---	---	---	RS80-LMDH-2	RS80-LMDHNP-2
31.75	1	RS100-LMD-1	RS100-LMDNP-1	RS100-LMDX-1	RS100-LMDKT-1	---	---	---	19.05	18.70
	2 RS compatible specifications	RS100-LMDS-2	---	---	---	---	---	---
	2	---	---	---	---	---	RS100-LMDH-2	RS100-LMDHNP-2
38.10	1	RS120-LMD-1	RS120-LMDNP-1	RS120-LMDX-1	---	---	---	---	22.23	24.75
38.10	2 RS compatible specifications	RS120-LMDS-2	---	---	---	---	---	---	22.23	24.75
44.45	1	RS140-LMD-1	RS140-LMDNP-1	---	---	---	---	---	25.40	24.75
44.45	2 RS compatible specifications	RS140-LMDS-2	---	---	---	---	---	---	25.40	24.75
50.80	1	RS160-LMD-1	---	---	---	---	---	---	28.58	31.2
50.80	2 RS compatible specifications	RS160-LMDS-2	---	---	---	---	---	---	28.58	31.2

Points to note when considering and adopting Lambda Chain

1. Foreign matter contamination prevention: Do not use the chain in cases where it comes into direct contact with food or where there is a risk that peeling debris or wear debris may get into the food.
Even when using in environments other than food where peeling debris or wear debris is a problem, please take measures to prevent foreign matter from entering, such as by installing an appropriate cover.
Nickel plating is not subject to regulation under the Food Sanitation Act or the Industrial Safety and Health Act, but please be careful if you are concerned about the plating peeling.
2. Regarding product oil: Depending on the conditions of use, the oil impregnated in the bushings may splash out.
Due to manufacturing reasons, Lambda Chain has a small amount of oil on it that is not NSF H1 compliant.
If the oil impregnated in the bushing is lost, it will rapidly run out of oil, leading to wear elongation and the end of its life.
3. If dust or other debris is present in the operating environment, the product may wear out and reach the end of its service life earlier than expected.
Do not use the bushing in an environment containing chemicals, solvents, or degreasing agents that may remove the oil impregnated in the bushing, or in water or under vacuum.
Lambda Chain is not coated with anti-rust oil, so please store it away from high temperatures, humidity, and dust.
4. Regarding double-strand chains: transverse pitch of Lambda Chain and Heavy-duty Lambda Chain (including coated and KF Series) differs from that of RS roller chain.
Please use the dedicated sprocket instead of the RS sprocket.
RS Double Strand Compatible Lambda Chain has the same transverse pitch as RS roller chain. RS double-strand sprockets can be used.
LMD-2 and LMDS-2 chains cannot be used together, including connecting parts such as connecting links. When replacing the chain, please select a compatible sprocket.
5. Check for interference with the equipment. The pin lengths for Lube-free chains vary depending on the thickness of the outer and inner plates and whether or not a felt seal is used.
The pins are longer than those of RS roller chain, so please check for interference with equipment when replacing.

Comparison of wear life in high temperature ranges (reference)

The wear life of a roller chain varies depending on the chain speed, load acting on it, number of sprocket teeth, condition, environment, temperature, and other conditions.
The diagram is for reference only.

*The wear life of Lambda Chain is determined to be over when it reaches +0.5% of the total length of the chain.

150℃ temperature range
RS50 size (In-house test results: non-lubricated operation)

230℃ temperature range
RS50 size (In-house test results: non-lubricated operation)

Note: 1. The operating temperature range for Lambda Chain is -10°C to 150°C.
2. The chain temperature may exceed the ambient temperature. Be careful not to let the chain temperature exceed the operating temperature.
3. At temperatures between 150°C and 200°C, the transmission capacity will drop to 3/4 of the catalog value. Please select a product that is appropriate for the temperature.
4. At temperatures below 200°C to 230°C, the transmission capacity will drop to half of the catalog value. Please select a product that is appropriate for the temperature.