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. 188-3198
Mfr. Part No.7012 - 80x120
BrandRingfeder
MYR538.48
Each
units
- 120mm - 39.5mm - - - -
RS Stock No. 488-8028
Mfr. Part No.R6-56 441
BrandLenze
MYR269.36
Each
units
10mm 16mm 28mm 28mm 23Nm Steel -30°C +85°C
RS Stock No. 477-6767
Mfr. Part No.ETP CLASSIC 45MM
BrandLenze
MYR780.22
Each
units
77mm 45mm 59mm 75mm 1290Nm Steel -30°C +85°C
RS Stock No. 188-3173
Mfr. Part No.4061 - 80x145
BrandRingfeder
MYR614.60
Each
units
60 mm, 65 mm, 70 mm 145mm - 37.8mm 4000 nm, 4900 nm, 5750 nm - - -
RS Stock No. 477-6701
Mfr. Part No.ETP CLASSIC 32MM
BrandLenze
MYR642.24
Each
units
60mm 32mm 43mm 57mm 420Nm Steel -30°C +85°C
RS Stock No. 188-3170
Mfr. Part No.4061 - 68x115
BrandRingfeder
MYR443.00
Each
units
50 mm, 55 mm, 60 mm 115mm - 34.5mm 2350 nm, 2850 nm, 3600 nm - - -
RS Stock No. 188-3187
Mfr. Part No.7012 - 40x65
BrandRingfeder
MYR326.30
Each
units
- 65mm - 27.5mm - - - -
RS Stock No. 188-3190
Mfr. Part No.7012 - 48x80
BrandRingfeder
MYR386.97
Each
units
- 80mm - 33.5mm - - - -
RS Stock No. 477-6751
Mfr. Part No.ETP CLASSIC 50MM
BrandLenze
MYR1,426.07
Each
units
83mm 50mm 65mm 82mm 1900Nm Steel -30°C +85°C
RS Stock No. 188-3189
Mfr. Part No.7012 - 45x75
BrandRingfeder
MYR382.44
Each
units
- 75mm - 33.5mm - - - -
RS Stock No. 188-3154
Mfr. Part No.4061 - 16x41
BrandRingfeder
MYR171.08
Each
units
12 mm, 13 mm, 14 mm 41mm - 18.5mm 90 nm, 110 nm, 130 nm - - -
RS Stock No. 188-3184
Mfr. Part No.7012 - 32x60
BrandRingfeder
MYR315.70
Each
units
- 60mm - 27.5mm - - - -
RS Stock No. 477-6789
Mfr. Part No.ETP EXPRESS 15MM
BrandLenze
MYR1,001.21
Each
units
18mm 15mm 46mm 39mm 46Nm Steel -30°C +85°C
RS Stock No. 188-3179
Mfr. Part No.7012 - 22x47
BrandRingfeder
MYR297.88
Each
units
- 47mm - 27.5mm - - - -
RS Stock No. 477-6818
Mfr. Part No.ETP EXPRESS 20MM
BrandLenze
MYR948.97
Each
units
24mm 20mm 51.5mm 44mm 110Nm Steel -30°C +85°C
RS Stock No. 188-3195
Mfr. Part No.7012 - 65x95
BrandRingfeder
MYR439.60
Each
units
- 95mm - 33.5mm - - - -
RS Stock No. 106-5539
Mfr. Part No.TLK110 50 X 65 mm
BrandTOLLOCK
MYR296.13
Each
units
50mm 65mm 92mm 78mm 2600Nm - -40°C +300°C
RS Stock No. 488-8012
Mfr. Part No.R6-111 147
BrandLenze
MYR224.20
Each
units
8mm 15mm 27mm 25.5mm 17Nm Steel -30°C +85°C
RS Stock No. 188-3180
Mfr. Part No.7012 - 24x50
BrandRingfeder
MYR307.15
Each
units
- 50mm - 27.5mm - - - -
RS Stock No. 188-3196
Mfr. Part No.7012 - 70x110
BrandRingfeder
MYR524.68
Each
units
- 110mm - 39.5mm - - - -
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Description:
Identical in design and function to the traditional 7012 device, this unit is made of stainless steel for applications requiring rust free installation. Torque capacity is somewhat reduced due to the nature of stainless steel.
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