Coupling (Shaft Coupling )
Coupling (shaft coupling) is a mechanical element used to connect a drive shaft and a driven shaft to transmit the motor's power to a device.
Couplings also play various roles in the connection between the drive and driven shafts, such as absorbing shaft misalignment (mounting error), softening motor vibration, suppressing heat transfer from the motor to the equipment, and preventing motor or equipment failure by damaging the coupling in the event of some problem.
What's New / Product Information
What is a coupling (shaft coupling)?
・It is a part for connecting the shaft (driving unit side) and the shaft (driven unit side).
Coupling is used to connect the drive shaft (e.g. motor) to the driven machine such as a pump opposed. It is also called a shaft coupling.
Role of coupling (shaft coupling)
Roles ①:Transmits rotational force (torque) to the opposit shaft.
Roles ②:Absorbs mounting misalignment.
Coupling products list
- Disk Couplings
- Elastomer Coupling
(Resin rubber ) - Wrapped type coupling
(Chain Coupling ) - Other Coupling
Jaw-Flex coupling (Elastomer Coupling ):Vibration absorption, Misalignment absorption
Elastomer Coupling has a simple structure with two hubs and one elasticity body (insert, spider), making it extremely easy to install/remove.
Tsubaki Elastomer Couplings and Jaw-Flex Couplings are available in two series: LN series which is non-backlash and excellent for vibration resistance at servomotor drives and shock absorption during startup and stopping, and L series which is available in a wide range of variations and is ideal for directly connecting general-use motors under light load.
Jaw-Flex coupling L Series
Model No. L□□□S/M/H~
This light-duty flexible coupling is ideal for direct connections of general-use motors.
- ・Extensive Lineup of Finished Bore Hub in Stock :
A broad range of bore combinations is possible with 63 types of bore machining and 499 combinations of bore diameters in stock. - ・Ideal for Direct Connection to Motor :
Designed for high-speed and low-torque applications. Accommodates every size of general-use motors. - ・Insert Option :
You can choose the insert suited for your applications. Please refer to the details page. - ・Simple Structure & Compact Size :
Constructed with just three parts and designed to be compact.
Simply move the coupling in an axial direction for connection/disconnection. - ・Cheap :
The lowest-priced coupling in our range for direct connection to motors with a highly economical design. - ・Standardized Plated Hub & Aluminum Hub :
The plated hub is fit for urethane and Hytrel® inserts, and resistant to corrosion.
Aluminum hubs are also standardized.
Applicable shaft diameter
Φ5mm~Φ69mm
Torque range
0.4~711N・m
Insert type
S Type = Nitrile
M Type = Urethane
H Type = Hytrel
Backlash
Provided
Jaw-Flex coupling LN Series
Model No. L□□U98A1/64D1~
Delivers more vibration damping than our existing products by employing new material for the spider.
- ・Excellent for vibration resistance at servomotor drives and shock absorption during startup and stopping.
- ・With the combination of the optimally designed spider and hub, this Jaw-Flex Coupling series is capable of transmitting torque without backlash.
- ・You can choose from between two types of spiders: 98A excellent for vibration damping; and 64D with high torsional stiffness and wear resistance.
- ・Simply constructed with two hubs and one spider, uses a clamp shaft coupling method, making this coupling extremely easy to install.
- ・Available for Taper-Lock Series. Contact a Tsubaki representative. (Made to order )
Applicable shaft diameter
Φ12mm~Φ42mm
Torque range
60~405N・m
Spider type
98A1:Hardness 98A
64D1:Hardness 64D
Backlash
None