Made in Japan Manufacturer: Fukuda Seiko Model: FND 459 M (with ball bearings, roller bearings, lubrication and seals/keyway)
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.
Components: Insert element FE 400 Z / FE 400 M + Raceway rings Inner ring keyway Outer ring press fit + Ball bearing + Roller bearing + Oil lubrication + GMN rubber seals Width: 34 mm Operating temperature: max. 100°C
FND 400 Z/M Type Model List
Model No.
d [mm]
D [mm]
W [mm]
Tnom [Nm]
nmax [min-1]
Cdyn. [N]
Cstat. [N]
Weight [kg]
b [mm]
t [mm]
FND 437 M
15
41
34
176
1,700
8,962
8,661
0.24
5
2.3
FND 437 Z
15
41
34
161
1,700
8,962
8,661
0.24
5
2.3
FND 442 M
20
46
34
223
1,500
10,247
10,708
0.28
6
2.8
FND 442 Z
20
46
34
208
1,500
10,247
10,708
0.28
6
2.8
FND 453 M
25
58
34
343
1,200
11,417
13,577
0.46
8
3.3
FND 453 Z
25
58
34
314
1,200
11,417
13,577
0.46
8
3.3
FND 459 M
30
64
34
411
1,100
12,691
16,320
0.55
8
3.3
FND 459 Z
30
64
34
381
1,100
12,691
16,320
0.55
8
3.3
FND 463 M
35
68
34
462
1,100
13,070
17,063
0.60
10
3.3
FND 463 Z
35
68
34
428
1,100
13,070
17,063
0.60
10
3.3
FND 470 M
40
75
34
550
1,000
14,050
19,840
0.69
12
3.3
FND 470 Z
40
75
34
509
1,000
14,050
19,840
0.69
12
3.3
FND 473 M
45
78
34
588
1,000
14,128
19,896
0.73
14
3.8
FND 473 Z
45
78
34
543
1,000
14,128
19,896
0.73
14
3.8
The specified nominal torque is based on sufficient stiffness of mating parts. and refers to the integrated insert element, not the key way. Rotation speed n = speed difference of mating parts
with seals and keyway (IR)
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 RL 400 Keyway per DIN 6885, Sheet 1 Tolerance: P9 with back clearance Integrated + Lubrication + Seal Lifetime oil lubrication GMN rubber seal * available with either freewheel clutch insert element FE 400 M (meander spring) or FE 400 Z (tension spring)
Characteristics Width 34 mm Operating temperature max. 100°C Lubrication Operative lifetime oil lubrication Installation Installation tolerances Shaft js6 (k5); hub H6 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 The freewheel clutch includes ball and roller bearings. Additional external bearing support is not necessary. Press fit pressure Press fit pressure must not be applied to the balls. Clamping direction The arrow on the inner ring designates the inner ring’s clamping direction.
