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. 477-6666
Mfr. Part No.ETP CLASSIC 25MM
BrandLenze
MYR813.56
Each
units
34mm - 49mm 43mm 250Nm Steel -30°C +85°C
RS Stock No. 188-3174
Mfr. Part No.4061 - 85x155
BrandRingfeder
MYR721.36
Each
units
60 mm, 65 mm, 70 mm 155mm - 45.8mm 6050 nm, 7250 nm, 8500 nm - - -
RS Stock No. 188-3161
Mfr. Part No.4061 - 36x72
BrandRingfeder
MYR246.63
Each
units
28 mm, 30 mm, 31 mm 72mm - 27.5mm 730 nm, 860 nm, 890 nm - - -
RS Stock No. 188-3194
Mfr. Part No.7012 - 60x90
BrandRingfeder
MYR413.63
Each
units
- 90mm - 33.5mm - - - -
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. 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. 188-3198
Mfr. Part No.7012 - 80x120
BrandRingfeder
MYR563.91
Each
units
- 120mm - 39.5mm - - - -
RS Stock No. 188-3180
Mfr. Part No.7012 - 24x50
BrandRingfeder
MYR321.64
Each
units
- 50mm - 27.5mm - - - -
RS Stock No. 106-5539
Mfr. Part No.TLK110 50 X 65 mm
BrandTOLLOCK
MYR331.98
Each
units
50mm 65mm 92mm 78mm 2600Nm - -40°C +300°C
RS Stock No. 188-3183
Mfr. Part No.7012 - 30x55
BrandRingfeder
MYR321.64
Each
units
- 55mm - 27.5mm - - - -
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. 188-3201
Mfr. Part No.7012 - 90x130
BrandRingfeder
MYR598.73
Each
units
- 130mm - 39.5mm - - - -
RS Stock No. 477-6953
Mfr. Part No.TLK110 12X18
BrandLenze
MYR128.54
Each
units
12mm 18mm 32mm 30mm 58Nm - -40°C +300°C
RS Stock No. 477-6997
Mfr. Part No.TLK110 20X28
BrandLenze
MYR147.88
Each
units
20mm 28mm 50mm 44mm 220Nm - -40°C +300°C
RS Stock No. 477-6818
Mfr. Part No.ETP EXPRESS 20MM
BrandLenze
MYR1,075.02
Each
units
24mm 20mm 51.5mm 44mm 110Nm Steel -30°C +85°C
RS Stock No. 477-6975
Mfr. Part No.TLK110 14X23
BrandLenze
MYR127.34
Each
units
14mm 23mm 38mm 30mm 68Nm - -40°C +300°C
RS Stock No. 188-3168
Mfr. Part No.4061 - 55x100
BrandRingfeder
MYR408.06
Each
units
42 mm, 45 mm, 48 mm 100mm - 34.5mm 1600 nm, 1950 nm, 2300 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. 188-3195
Mfr. Part No.7012 - 65x95
BrandRingfeder
MYR460.38
Each
units
- 95mm - 33.5mm - - - -
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 - - -