Double Plus Free Flow Chains

Product photo
  • A Free Flow Chain using a unique combination of small and large diameter rollers to allow high speed conveyance at 2.5x the speed of the chain.
  • Low chain speed allows for quiet accumulation.
  • A wide range of selections is available by combining four different base chain types with seven different roller types.
  • We also feature snap cover chains, which prevent parts from falling into conveyor frames, as well as a complete line-up of accessories.
  • A complete line-up of accessories.
  • ※The plate contour for Double Plus Chain and Double Plus Chain with snap covers is different.
    Be advised that you will not be able to add snap covers to Double Plus Chain that has already been installed.

Double Plus Chain Principle

Click below to learn about the principle of 2.5x free flow conveyance.

Combination of base chain and rollers

Select from a variety of base chains and rollers to meet your needs. Click on the following for more information.

Construction

Without Snap Cover


[Click to enlarge ]
  • ・"X" indicates a press fit.Other parts are slip fit.
  • ・In case of Lambda specification.
    Bushes are a special oil-impregnated sintered bush.
    Bushes are press-fitted into the inner link plate.
    Pins are coated with a special nickel plating.
    The inner and outer plates have a black oxide coating.

With Snap Cover


[Click to enlarge ]
  • ・"X" indicates a press fit.Other parts are slip fit.
  • ・The plate contour for where the snap cover will be attached differs from the Double Plus Chain diagram above.
  • ・Snap covers can be attached and removed.
  • ・For lambda specifications, refer to the explanation of the structural drawing without the snap cover.

Lineup with snap cover

  • ・By attaching the light gray engineering plastic snap covers, you can cover the gap between large and small rollers, and between the small rollers themselves, preventing bolts, nuts, etc. from getting caught or falling through.

About each specification

  • ・Standard Series (With / without Snap Cover)
    The base chain with Standard Series is steel, and users can pair this with seven different roller types to meet their application needs. (VRPUA and VRPUB are available for RF2030 only.)
  • ・Lambda Series (With / without Snap Cover)
    Lambda Series uses a special oil-impregnated sintered bush for lube-free, long life operation.
  • ・HCP Series (With / without Snap Cover)
    Base chain is hard chrome plated, with rollers available in engineering plastic. Ideal for use in clean rooms and other areas where rust is to be avoided.
  • ・SS Series (With / without Snap Cover)
    Base chain is stainless steel, with rollers available in engineering plastic. Corrosion resistant.
    While non-magnetic, it retains slight magnetism from plastic deformation during the parts processing and assembly processes. Contact a Tsubaki representative if a totally non-magnetic chain is needed.

Catalogs ・Instruction Manuals

List of Models

※Click the name for more information.


Double Plus Free Flow Chains

Pitch
mm
Plastic roller Steel
roller
Roller dia.
mm
Inner width
of inner link
mm
Standard Series Lambda Series Hardened chrome plating Stainless Steel Package
19.05 RF2030VRPA RF2030VRPA-LMC RF2030VRPA-HCP RF2030VRPA-SS RF2030VR 11.91 8.0
RF2030VRPB RF2030VRPB-LMC RF2030VRPB-HCP RF2030VRPB-SS ---
RF2030VRPC RF2030VRPC-LMC RF2030VRPC-HCP RF2030VRPC-SS
RF2030VRPD RF2030VRPD-LMC RF2030VRPD-HCP RF2030VRPD-SS
RF2030VRPUA RF2030VRPUA-LMC RF2030VRPUA-HCP RF2030VRPUA-SS
RF2030VRPUB RF2030VRPUB-LMC RF2030VRPUB-HCP RF2030VRPUB-SS
25.40 RF2040VRPA RF2040VRPA-LMC RF2040VRPA-HCP RF2040VRPA-SS RF2040VR 15.88 10.3
RF2040VRPB RF2040VRPB-LMC RF2040VRPB-HCP RF2040VRPB-SS ---
RF2040VRPC RF2040VRPC-LMC RF2040VRPC-HCP RF2040VRPC-SS
RF2040VRPD RF2040VRPD-LMC RF2040VRPD-HCP RF2040VRPD-SS
31.75 RF2050VRPA RF2050VRPA-LMC RF2050VRPA-HCP RF2050VRPA-SS RF2050VR 19.05 13.0
RF2050VRPB RF2050VRPB-LMC RF2050VRPB-HCP RF2050VRPB-SS ---
RF2050VRPC RF2050VRPC-LMC RF2050VRPC-HCP RF2050VRPC-SS
RF2050VRPD RF2050VRPD-LMC RF2050VRPD-HCP RF2050VRPD-SS
38.10 RF2060VRPA RF2060VRPA-LMC RF2060VRPA-HCP RF2060VRPA-SS RF2060VR 22.23 15.5
RF2060VRPB RF2060VRPB-LMC RF2060VRPB-HCP RF2060VRPB-SS ---
RF2060VRPC RF2060VRPC-LMC RF2060VRPC-HCP RF2060VRPC-SS
RF2060VRPD RF2060VRPD-LMC RF2060VRPD-HCP RF2060VRPD-SS
50.80 RF2080VRPA RF2080VRPA-LMC RF2080VRPA-HCP RF2080VRPA-SS --- 28.58 20.0
RF2080VRPB RF2080VRPB-LMC RF2080VRPB-HCP RF2080VRPB-SS
RF2080VRPC RF2080VRPC-LMC RF2080VRPC-HCP RF2080VRPC-SS
RF2080VRPD RF2080VRPD-LMC RF2080VRPD-HCP RF2080VRPD-SS

Double Plus Snap Cover Chain

Pitch
mm
Plastic roller Steel
roller
Roller dia.
mm
Inner width
of inner link
mm
Standard Series Lambda Series Hardened chrome plating Stainless Steel Package
19.05 RF2030VRPA-SC RF2030VRPA-LMCSC RF2030VRPA-HCPSC RF2030VRPA-SSSC RF2030VR-SC 11.91 8.0
RF2030VRPB-SC RF2030VRPB-LMCSC RF2030VRPB-HCPSC RF2030VRPB-SSSC ---
RF2030VRPC-SC RF2030VRPC-LMCSC RF2030VRPC-HCPSC RF2030VRPC-SSSC
RF2030VRPD-SC RF2030VRPD-LMCSC RF2030VRPD-HCPSC RF2030VRPD-SSSC
RF2030VRPUA-SC RF2030VRPUA-LMCSC RF2030VRPUA-HCPSC RF2030VRPUA-SSSC
RF2030VRPUB-SC RF2030VRPUB-LMCSC RF2030VRPUB-HCPSC RF2030VRPUB-SSSC
25.40 RF2040VRPA-SC RF2040VRPA-LMCSC RF2040VRPA-HCPSC RF2040VRPA-SSSC RF2040VR-SC 15.88 10.3
RF2040VRPB-SC RF2040VRPB-LMCSC RF2040VRPB-HCPSC RF2040VRPB-SSSC ---
RF2040VRPC-SC RF2040VRPC-LMCSC RF2040VRPC-HCPSC RF2040VRPC-SSSC
RF2040VRPD-SC RF2040VRPD-LMCSC RF2040VRPD-HCPSC RF2040VRPD-SSSC
31.75 RF2050VRPA-SC RF2050VRPA-LMCSC RF2050VRPA-HCPSC RF2050VRPA-SSSC RF2050VR-SC 19.05 13.0
RF2050VRPB-SC RF2050VRPB-LMCSC RF2050VRPB-HCPSC RF2050VRPB-SSSC ---
RF2050VRPC-SC RF2050VRPC-LMCSC RF2050VRPC-HCPSC RF2050VRPC-SSSC
RF2050VRPD-SC RF2050VRPD-LMCSC RF2050VRPD-HCPSC RF2050VRPD-SSSC
38.10 RF2060VRPA-SC RF2060VRPA-LMCSC RF2060VRPA-HCPSC RF2060VRPA-SSSC RF2060VR-SC 22.23 15.5
RF2060VRPB-SC RF2060VRPB-LMCSC RF2060VRPB-HCPSC RF2060VRPB-SSSC ---
RF2060VRPC-SC RF2060VRPC-LMCSC RF2060VRPC-HCPSC RF2060VRPC-SSSC
RF2060VRPD-SC RF2060VRPD-LMCSC RF2060VRPD-HCPSC RF2060VRPD-SSSC
50.80 RF2080VRPA-SC RF2080VRPA-LMCSC RF2080VRPA-HCPSC RF2080VRPA-SSSC --- 28.58 20.0
RF2080VRPB-SC RF2080VRPB-LMCSC RF2080VRPB-HCPSC RF2080VRPB-SSSC
RF2080VRPC-SC RF2080VRPC-LMCSC RF2080VRPC-HCPSC RF2080VRPC-SSSC
RF2080VRPD-SC RF2080VRPD-LMCSC RF2080VRPD-HCPSC RF2080VRPD-SSSC

When selecting sprocket specifications

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

Please use Double plus chain dedicated sprockets for Double plus chain.

Click here for the chain/sprocket compatibility table.