Tsubaki product selection

Roller chain coupling (wrap type coupling)

It consists of a double-strand roller chain and two sprockets.
The chain is connected by wrapping it around the sprocket and separated by unwinding it, so it can be connected and separated without moving the device.
・Applicable shaft diameter: Φ9.5mm to Φ700mm
Torque range: 99.9 to 717,000 Nm

Features

・Excellent durability

The rotational force is shared between the strong roller chain and the surface-hardened sprocket teeth, providing excellent durability.
- Easy to connect and disassemble

The roller chain can be easily connected and disassembled by inserting and removing a single joint pin.
・Absorbs large misalignments

The clearance between the components accommodates large misalignments on both shafts.
・A wide range of models

In addition to the 15 types that comply with JIS standards, 9 other types are standardized, for a total of 24 types (Roller chain coupling JIS B 1456-1989).

Model number	Maximum shaft bore diameter mm	Allowable transmission torque N・m	Model number	Maximum shaft bore diameter mm	Allowable transmission torque N・m
CR3812	Φ16	99.9	CR12018	Φ125	13200
CR4012	Φ22	217	CR12022	Φ140	17100
CR4014	Φ28	295	CR16018	Φ160	28600
CR4016	Φ32	386	CR16022	Φ200	41700
CR5014	Φ35	562	CR20018	Φ205	57000
CR5016	Φ40	735	CR20022	Φ260	71900
CR5018	Φ45	931	CR24022	Φ310	129000
CR6018	Φ56	1750	CR24026	Φ380	157000
CR6022	Φ71	2370	CR32022	Φ430	255000
CR8018	Φ80	3880	CR40020	Φ470	494000
CR8022	Φ100	5580	CR40024	Φ590	602000
CR10020	Φ110	8780	CR40028	Φ700	717000

*The allowable transmission torque values are for speeds of 50 r/min or less.

-The main body consists of two special sprockets with hardened tooth tips and a special two-row roller chain.
- Joint pins, spring clip or split pins are included as special parts.
*All of these are also sold as individual parts.

Be sure to use the case in the following cases:

- By attaching it to a chain coupling, it prevents lubricant from scattering and dust from entering, extending the life of the coupling.
- It has a split shape that can be separated perpendicular to the axis, making it convenient for installation and inspection.

The case is made of die-cast or cast aluminum and has a two-part structure, to which gaskets (cork with synthetic rubber) are attached.
- Parts include 4 to 6 hex socket bolts and a dedicated oil seal.
・Oil seals and packings are sold as individual parts. Lubricating grease must be purchased separately.

- Install the oil seal on the side with the greatest vibration.
- When using vertically, the oil seal side should be on the top side.
If you would like to take measures to prevent grease leakage, a quote will be required, so please contact us.

CR	38	12	H
｜ series	｜ Chain number	｜ Number of sprocket teeth	｜ H: Main unit K: Case

Hub symbol details
Hub Type	Shaft hole diameter tolerance	Shaft Hole Diameter	Keyway tolerance	Set screw position
N	H	35	J	D2
N	F	40	F	D2
N: Standard hub	F:F7 G:G7 H:H7 J:JS7 P:P7 M:M7 N:N7 K:K7 R:R7	Shaft hole diameter is in 1mm increments	J: New JIS Js9 P: New JIS P9 F: Old JIS F7 E: Old JIS E9	[Click to enlarge]

Specification	Left hub	Right hub (oil seal side)
size
Shaft Hole Diameter
Hub Type	N	N
Shaft hole diameter tolerance
Keyway tolerance
Set screw position

*Click on the model number to display detailed information.

Main body (pilot bore stock item)	Main body (made to order)	Case
CR3812H	CR24022H	CR3812K
CR4012H	CR24026H	CR4012K
CR4014H	CR32022H	CR4014K
CR4016H	CR40020H	CR4016K
CR5014H	CR40024H	CR5014K
CR5016H	CR40028H	CR5016K
CR5018H		CR5018K
CR6018H		CR6018K
CR6022H		CR6022K
CR8018H		CR8018K
CR8022H		CR8022K
CR10020H		CR10020K
CR12018H		CR12018K
CR12022H		CR12022K
CR16018H		CR16018K
CR16022H		CR16022K
CR20018H		CR20018K
CR20022H		CR20022K