Locking Bushes

Locking bushes are keyless shaft locking devices which use friction to connect from a shaft to a hub. They are designed for ultra fast mounting of several elements such as gears, pulleys, and sprockets.

How do locking bushes work?

There are two main types of locking bushes which work in different ways. A mechanical locking bush has a number of axial bolts which are tightened to expand tapered cones which in turn grip the shaft and hub. Some locking bushes are designed for hydromechanical purposes, they work mostly by compressing a pressure medium that expands the inner and outer walls of the bush. Loosening the screw will immediately dismantle the bush. This can be repeated a number of times.

Why use locking bushes?

Locking bushes allow a connection without the need for keyways or splines and collars. They are useful where a very high accuracy is required. The main advantages of locking bushes include their easy dismantling, ease of setting, lower machining costs and a backlash free connection without wear or corrosion damage.


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Description Price Shaft Diameter Outside Diameter Flange Diameter Length Rated Torque Material Minimum Operating Temperature Maximum Operating Temperature
RS Stock No. 188-3157
Mfr. Part No.4061 - 21x50
BrandRingfeder
$63.07
Each
units
16 mm, 17 mm, 18mm 50mm - 22.5mm 250 Nm, 290 Nm, 330Nm - - -
RS Stock No. 188-3158
Mfr. Part No.4061 - 24x50
BrandRingfeder
$63.07
Each
units
19 mm, 20 mm, 21mm 50mm - 22.5mm 300 Nm, 340 Nm, 390Nm - - -
RS Stock No. 188-3166
Mfr. Part No.4061 - 48x80
BrandRingfeder
$101.95
Each
units
36 mm, 38 mm, 40mm 80mm - 30mm 1150 Nm, 1350 Nm, 1550Nm - - -
RS Stock No. 188-3168
Mfr. Part No.4061 - 55x100
BrandRingfeder
$130.54
Each
units
42 mm, 45 mm, 48mm 100mm - 34.5mm 1600 Nm, 1950 Nm, 2300Nm - - -
RS Stock No. 188-3188
Mfr. Part No.7012 - 42x75
BrandRingfeder
$129.49
Each
units
- 75mm - 33.5mm - - - -
RS Stock No. 188-3199
Mfr. Part No.7012 - 85x125
BrandRingfeder
$183.09
Each
units
- 125mm - 39.5mm - - - -
RS Stock No. 188-3186
Mfr. Part No.7012 - 38x65
BrandRingfeder
$110.47
Each
units
- 65mm - 27.5mm - - - -
RS Stock No. 188-3202
Mfr. Part No.7012 - 95x135
BrandRingfeder
$199.37
Each
units
- 135mm - 39.5mm - - - -
RS Stock No. 188-3169
Mfr. Part No.4061 - 62x110
BrandRingfeder
$135.29
Each
units
48 mm, 50 mm, 52mm 110mm - 34.5mm 3000 Nm, 3300 Nm, 3500Nm - - -
RS Stock No. 188-3167
Mfr. Part No.4061 - 50x90
BrandRingfeder
$116.63
Each
units
38 mm, 40 mm, 42mm 90mm - 31.5mm 1650 Nm, 1900 Nm, 2150Nm - - -
RS Stock No. 188-3196
Mfr. Part No.7012 - 70x110
BrandRingfeder
$177.66
Each
units
- 110mm - 39.5mm - - - -
RS Stock No. 188-3189
Mfr. Part No.7012 - 45x75
BrandRingfeder
$129.49
Each
units
- 75mm - 33.5mm - - - -
RS Stock No. 188-3187
Mfr. Part No.7012 - 40x65
BrandRingfeder
$110.47
Each
units
- 65mm - 27.5mm - - - -
RS Stock No. 188-3160
Mfr. Part No.4061 - 30x52
BrandRingfeder
$72.21
Each
units
24 mm, 25 mm, 26mm 52mm - 26mm 450 Nm, 500 Nm, 560Nm - - -
RS Stock No. 188-3197
Mfr. Part No.7012 - 75x115
BrandRingfeder
$180.29
Each
units
- 115mm - 39.5mm - - - -
RS Stock No. 188-3177
Mfr. Part No.7012 - 19x47
BrandRingfeder
$100.83
Each
units
- 47mm - 27.5mm - - - -
RS Stock No. 188-3163
Mfr. Part No.4061 - 40x72
BrandRingfeder
$93.95
Each
units
30 mm, 31 mm, 32mm 72mm - 28.5mm 900 Nm, 910 Nm, 990Nm - - -
RS Stock No. 188-3172
Mfr. Part No.4061 - 75x138
BrandRingfeder
$169.79
Each
units
55 mm, 60 mm, 65mm 138mm - 37.8mm 3300 Nm, 4150 Nm, 5100Nm - - -
RS Stock No. 188-3198
Mfr. Part No.7012 - 80x120
BrandRingfeder
$182.29
Each
units
- 120mm - 39.5mm - - - -
RS Stock No. 188-3170
Mfr. Part No.4061 - 68x115
BrandRingfeder
$149.97
Each
units
50 mm, 55 mm, 60mm 115mm - 34.5mm 2350 Nm, 2850 Nm, 3600Nm - - -