Made in Japan
Manufacturer: Fukuda Seiko
Model: FRN 427 M
Developed by GMN, which has been dealing with machine component parts for more than 100 years, this is a lightweight, space-saving, and high-torque one-way clutch. A mechanism of the ring fastening part called a sprag controls the direction of rotation.
use
Printing Machinery
Conveyor
E-bikes (electrically power assisted bicycles)
Compressor
winch
Generators
Emergency power supply equipment and fire doors
Wheelchair
Features
Suggestions for backstops, indexes, and overrunning
Space-saving and high torque
High-speed swivel motion
High-precision positioning
Minimal moment of inertia
Uniform load distribution due to individual sprag movements
High design freedom with various options: with inner and outer rings
, with axle reception, with keyway, with lubrication and seals
summary
A one-way clutch is a clutch mechanism that transmits power in only one direction, and GMN uses a sprag-type mechanism.
Idle direction Power transmission direction
The friction force generated when the uniquely designed sprag is upright around the entire circumference controls the direction of rotation. Since a static friction force is generated around the entire circumference, both high torque and space saving are achieved.
The slight rotation of the tilt angle of δ minutes makes the splug stand upright.
There are two types of spring structures that fix the splugs, Z type and M type, and use the M type for applications where the angular frequency (angular frequency) is greater than 10 Hz.
You can choose the best clutch from a variety of designs + options.Series: FRN
Components:
Insert element
FE 400 Z / FE 400 M
+ Raceway rings
Inner ring keyway
Outer ring press fit
Lubrication:
Oil or grease
Width:
12 mm
Operating temperature:
max. 140°C
Higher temp. on request
Characteristics
Width
12 mm
Operating temperature
max. 140°C
Higher temperatures on request
Lubrication
Oil or grease lubrication (Pg. 60–61)
Delivered with corrosion protection.
Operative grease filling on request.
Installation
Installation tolerances
Shaft js6 (k5); hub H6
Constraints
The freewheel clutch insert element requires axial constraints
on both sides.
Mating parts
Hardening and grinding of the mating parts is not necessary.
Thoroughly clean (grease free) the mating parts in the vicinity
of the freewheel clutch as well as the freewheel clutch’s rings
before making the press fit.
Bearing
Freewheel clutch insert elements are not self-centering.
External bearing support to define the gap between mating parts
(inner and outer rings) is necessary.
Components
Freewheel clutch
insert element* FE 400 M (meander spring)
FE 400 Z (tension spring)
+ Raceways
inner ring
outer ring – Ball bearing
Bearing steel, hardened and ground
Press fit– Roller bearing
Keyway per DIN 6885, Sheet 1
Tolerance: P9 with back clearance- Lubrication – Seal —
* available with either freewheel clutch insert element
FE 400 M (meander spring) or FE 400 Z (tension spring).
FRN 400 Z/M type (with inner and outer rings/keyway)
Specifications ◯
Mounting dimensions: 12 mm (axial)
◯ Shaft diameter: 10~45 mm
◯ Heat resistance: up to 140°C
◯ Lubrication: oil or grease
The specified nominal torque is based on sufficient stiffness of mating parts (Pg. 22)
and refers to the integrated insert element, not the key way.
Rotation speed n = insert element’s inherent speed
Series: FRN
