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. 477-6925
Mfr. Part No.ETP EXPRESS 50MM
BrandLenze
MYR1,429.42
Each
units
60mm 50mm 98.5mm 80mm 1900Nm Steel -30°C +85°C
RS Stock No. 477-6666
Mfr. Part No.ETP CLASSIC 25MM
BrandLenze
MYR813.56
Each
units
34mm - 49mm 43mm 250Nm Steel -30°C +85°C
RS Stock No. 188-3158
Mfr. Part No.4061 - 24x50
BrandRingfeder
MYR197.16
Each
units
19 mm, 20 mm, 21 mm 50mm - 22.5mm 300 nm, 340 nm, 390 nm - - -
RS Stock No. 477-6919
Mfr. Part No.ETP EXPRESS 45MM
BrandLenze
MYR1,361.62
Each
units
54mm 45mm 93mm 78mm 1400Nm Steel -30°C +85°C
RS Stock No. 188-3164
Mfr. Part No.4061 - 44x80
BrandRingfeder
MYR318.68
Each
units
32 mm, 35 mm, 36 mm 80mm - 30mm 1000 nm, 1250 nm, 1350 nm - - -
RS Stock No. 188-3188
Mfr. Part No.7012 - 42x75
BrandRingfeder
MYR400.55
Each
units
- 75mm - 33.5mm - - - -
RS Stock No. 188-3155
Mfr. Part No.4061 - 18x44
BrandRingfeder
MYR181.11
Each
units
14 mm, 15 mm, 16 mm 44mm - 18.5mm 110 nm, 130 nm, 160 nm - - -
RS Stock No. 188-3172
Mfr. Part No.4061 - 75x138
BrandRingfeder
MYR530.73
Each
units
55 mm, 60 mm, 65 mm 138mm - 37.8mm 3300 nm, 4150 nm, 5100 nm - - -
RS Stock No. 188-3175
Mfr. Part No.4061 - 90x155
BrandRingfeder
MYR793.40
Each
units
65 mm, 70 mm, 75 mm 155mm - 44.5mm 6000 nm, 7550 nm, 9150 nm - - -
RS Stock No. 188-3199
Mfr. Part No.7012 - 85x125
BrandRingfeder
MYR566.38
Each
units
- 125mm - 39.5mm - - - -
RS Stock No. 188-3184
Mfr. Part No.7012 - 32x60
BrandRingfeder
MYR330.65
Each
units
- 60mm - 27.5mm - - - -
RS Stock No. 188-3173
Mfr. Part No.4061 - 80x145
BrandRingfeder
MYR650.44
Each
units
60 mm, 65 mm, 70 mm 145mm - 37.8mm 4000 nm, 4900 nm, 5750 nm - - -
RS Stock No. 477-6616
Mfr. Part No.ETP CLASSIC 15MM
BrandLenze
MYR739.60
Each
units
38mm 15mm 23mm 35mm 55Nm Steel -30°C +85°C
RS Stock No. 188-3196
Mfr. Part No.7012 - 70x110
BrandRingfeder
MYR549.57
Each
units
- 110mm - 39.5mm - - - -
RS Stock No. 477-6846
Mfr. Part No.ETP EXPRESS 25MM
BrandLenze
MYR1,121.25
Each
units
30mm 25mm 58mm 49mm 230Nm Steel -30°C +85°C
RS Stock No. 477-6694
Mfr. Part No.ETP CLASSIC 30MM
BrandLenze
MYR916.78
Each
units
57mm 30mm 41mm 52mm 420Nm Steel -30°C +85°C
RS Stock No. 188-3176
Mfr. Part No.4061 - 95x170
BrandRingfeder
MYR917.29
Each
units
65 mm, 70 mm, 75 mm 170mm - 52.5mm 6700 nm, 8450 nm, 10200 nm - - -
RS Stock No. 477-6824
Mfr. Part No.ETP EXPRESS 22MM
BrandLenze
MYR774.47
Each
units
27mm 22mm 55.5mm 46mm 130Nm Steel -30°C +85°C
RS Stock No. 188-3178
Mfr. Part No.7012 - 20x47
BrandRingfeder
MYR311.90
Each
units
- 47mm - 27.5mm - - - -
RS Stock No. 106-5538
Mfr. Part No.TLK110 40 X 53 mm
BrandTOLLOCK
MYR227.19
Each
units
40mm 53mm 75mm 56mm 900Nm - -40°C +300°C
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