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. 188-3156
Mfr. Part No.4061 - 20x46
BrandRingfeder
R 520.09
Each
units
15 mm, 16 mm, 17 mm 46mm - 21mm 140 nm, 170 nm, 200 nm - - -
RS stock no. 188-3201
Mfr. Part No.7012 - 90x130
BrandRingfeder
R 1,801.75
Each
units
- 130mm - 39.5mm - - - -
RS stock no. 477-6638
Mfr. Part No.ETP CLASSIC 20MM
BrandLenze
R 2,176.12
Each
units
45mm 20mm 28mm 42mm 125Nm Steel -30°C +85°C
RS stock no. 188-3191
Mfr. Part No.7012 - 50x80
BrandRingfeder
R 1,189.20
Each
units
- 80mm - 33.5mm - - - -
RS stock no. 477-6666
Mfr. Part No.ETP CLASSIC 25MM
BrandLenze
R 2,300.62
Each
units
34mm - 49mm 43mm 250Nm Steel -30°C +85°C
RS stock no. 477-6874
Mfr. Part No.ETP EXPRESS 32MM
BrandLenze
R 2,670.55
Each
units
39mm 32mm 68.5mm 56mm 440Nm Steel -30°C +85°C
RS stock no. 188-3178
Mfr. Part No.7012 - 20x47
BrandRingfeder
R 900.40
Each
units
- 47mm - 27.5mm - - - -
RS stock no. 188-3197
Mfr. Part No.7012 - 75x115
BrandRingfeder
R 1,669.46
Each
units
- 115mm - 39.5mm - - - -
RS stock no. 188-3175
Mfr. Part No.4061 - 90x155
BrandRingfeder
R 2,447.95
Each
units
65 mm, 70 mm, 75 mm 155mm - 44.5mm 6000 nm, 7550 nm, 9150 nm - - -
RS stock no. 477-6789
Mfr. Part No.ETP EXPRESS 15MM
BrandLenze
R 2,942.77
Each
units
18mm 15mm 46mm 39mm 46Nm Steel -30°C +85°C
RS stock no. 477-6824
Mfr. Part No.ETP EXPRESS 22MM
BrandLenze
R 2,196.13
Each
units
27mm 22mm 55.5mm 46mm 130Nm Steel -30°C +85°C
RS stock no. 106-5539
Mfr. Part No.TLK110 50 X 65 mm
BrandTOLLOCK
R 1,023.28
Each
units
50mm 65mm 92mm 78mm 2600Nm - -40°C +300°C
RS stock no. 477-6701
Mfr. Part No.ETP CLASSIC 32MM
BrandLenze
R 1,968.21
Each
units
60mm 32mm 43mm 57mm 420Nm Steel -30°C +85°C
RS stock no. 188-3157
Mfr. Part No.4061 - 21x50
BrandRingfeder
R 567.14
Each
units
16 mm, 17 mm, 18 mm 50mm - 22.5mm 250 nm, 290 nm, 330 nm - - -
RS stock no. 488-8006
Mfr. Part No.R6-111 139
BrandLenze
R 686.93
Each
units
6mm 14mm 18mm 22mm 5Nm Steel -30°C +85°C
RS stock no. 188-3158
Mfr. Part No.4061 - 24x50
BrandRingfeder
R 567.52
Each
units
19 mm, 20 mm, 21 mm 50mm - 22.5mm 300 nm, 340 nm, 390 nm - - -
RS stock no. 188-3153
Mfr. Part No.4061 - 14x37
BrandRingfeder
R 520.84
Each
units
10 mm, 11 mm, 12 mm 37mm - 14.8mm 37.5 nm, 46 nm, 60 nm - - -
RS stock no. 188-3169
Mfr. Part No.4061 - 62x110
BrandRingfeder
R 1,277.12
Each
units
48 mm, 50 mm, 52 mm 110mm - 34.5mm 3000 nm, 3300 nm, 3500 nm - - -
RS stock no. 188-3182
Mfr. Part No.7012 - 28x55
BrandRingfeder
R 931.22
Each
units
- 55mm - 27.5mm - - - -
RS stock no. 477-6925
Mfr. Part No.ETP EXPRESS 50MM
BrandLenze
R 4,101.63
Each
units
60mm 50mm 98.5mm 80mm 1900Nm Steel -30°C +85°C