• Mining Industry

Coal Handling Preparation Plants (CHPP)

Power and Performance for the Mining Industry
coal handling plant

Coal Handling Preparation Plants (CHPP) are large facilities used to remove (wash) the grime and sediment (soil, rock, etc) from coal in order to prepare it to be transported to market. The cleaner the coal is able to become, the higher the market value will be, plus less waste material means less weight, resulting in lower overall transportation costs.

Widely utilized within CHPPs is Tsubaki's full lineup of RS Roller Chain G7 and lube-free Lambda® Chains. As conditions can make chain lubrication difficult, these chains allow for long wear life without addition lubrication, keeping your CHPP running longer, cleaner, and reduce the impact on the environment.

RS Roller Chain 'G7'

Pursuing the Ultimate in Quality...

Our 7th model upgrade, celebrating 90 years of quality. Pursuing the ultimate in quality, Tsubaki has created the world's highest standard of roller chain.

RS Roller Chain G7

"TSUBAKI" and the "RS" brand are stamped together on the chain. (Applicable sizes: RS40 to RS240)

LG Solid Bush


Tsubaki proprietary LG (lube groove) technology has been applied to the inside surface of our cold-forged seamless bush. The combined effect of "seamless + LG" effectively doubles the wear life over previous bushes.

(Applicable sizes: RS80 to RS140)

LG Solid Bush

*LG (lube groove) Technology (patented): Tsubaki proprietary technology that includes lubrication in the grooves on the inside surface of the bush to retain the beneficial effects of lubrication longer.

Note: The wear life and kW ratings of sizes RS60 and smaller have not changed.

Smaller Size and a Longer Wear Life

  • Twice the life means a dramatic reduction in maintenance costs. (Applicable sizes: RS80 to RS140)
  • kW ratings up by 33%.
    The world's top-class kW rating is achieved by increasing strength in the M-type connecting link owing to Ring Coin (RC) processing and improvement in the two-pitch offset link. This enables reduction of chain and sprocket sizes (one size down), downsizing equipment. (Applicable sizes: RS80 to RS240)

Tsubaki Lube Free Lambda Chains

Tsubaki's Lube Free 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.

Lube-free and Long-life

Longer lasting chains made possible by special oil-impregnated bushes.

Basic Construction

  • Lambda Chain (Normal specification) Black inner and outer ring plates
  • Lambda Chain (Nickel-plated specification) Special nickel plating (Excluding bushings)
lambda chain


Compatible with RS Roller Chains.

Operating Temperature

−10 ºC to 150 ºC / 14 ºF to 302 ºF


Use the General Selection Method.


Tsubaki has a wide line-up of lube-free, long life products that help customers reduce costs, while also reducing their impact on the environment. These include Standard Lambda Chain, Surface Treated Lambda Chain (NP/NEP specification) Heavy Duty Lambda Chain, Curved Lambda Chain, BS Lambda Chain, etc. For conveyance needs a wide variety of specialized attachments are also available, please see your local Tsubaki representative for more details.

More than 7 Times the Wear Elongation Life of RS Roller Chain

Lambda wear chart

In-house testing lube-free operation Performance in ambient temperature (-10ºC to 60ºC / 14ºF to 140ºF)

RS120-LMD-1 and RS140-LMD-1 wear elongation life are 2.5 times longer

Superior Performance through the Combination of Superior Parts

  • Special Coated Pin
    For smoother rotation
  • High-Performance Sintered Bush
    Impregnated with lubricant
  • Ring-Coined Connecting Link (Patented)
    A ring-shaped groove is provided around the connecting link plate hole. This creates positive residual stress that keeps the same strength as the base chain, even with slip fit between pins and holes.