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. 477-6880
Mfr. Part No.ETP EXPRESS 35MM
BrandLenze
SGD424.83
Each
units
42mm 72mm 35mm 59mm 640Nm Steel -30°C +85°C
RS Stock No. 488-8012
Mfr. Part No.R6-111 147
BrandLenze
SGD75.51
Each
units
8mm 15mm 27mm 25.5mm 17Nm Steel -30°C +85°C
RS Stock No. 477-6925
Mfr. Part No.ETP EXPRESS 50MM
BrandLenze
SGD424.97
Each
units
60mm 50mm 98.5mm 80mm 1900Nm Steel -30°C +85°C
RS Stock No. 188-3173
Mfr. Part No.4061 - 80x145
BrandRingfeder
SGD210.72
Each
units
60 mm, 65 mm, 70 mm 145mm - 37.8mm 4000 nm, 4900 nm, 5750 nm - - -
RS Stock No. 477-6767
Mfr. Part No.ETP CLASSIC 45MM
BrandLenze
SGD262.77
Each
units
77mm 45mm 59mm 75mm 1290Nm Steel -30°C +85°C
RS Stock No. 106-5538
Mfr. Part No.TLK110 40 X 53 mm
BrandTOLLOCK
SGD68.25
Each
units
40mm 53mm 75mm 56mm 900Nm - -40°C +300°C
RS Stock No. 188-3183
Mfr. Part No.7012 - 30x55
BrandRingfeder
SGD96.63
Each
units
- 55mm - 27.5mm - - - -
RS Stock No. 188-3158
Mfr. Part No.4061 - 24x50
BrandRingfeder
SGD58.61
Each
units
19 mm, 20 mm, 21 mm 50mm - 22.5mm 300 nm, 340 nm, 390 nm - - -
RS Stock No. 188-3157
Mfr. Part No.4061 - 21x50
BrandRingfeder
SGD58.61
Each
units
16 mm, 17 mm, 18 mm 50mm - 22.5mm 250 nm, 290 nm, 330 nm - - -
RS Stock No. 188-3174
Mfr. Part No.4061 - 85x155
BrandRingfeder
SGD214.46
Each
units
60 mm, 65 mm, 70 mm 155mm - 45.8mm 6050 nm, 7250 nm, 8500 nm - - -
RS Stock No. 188-3178
Mfr. Part No.7012 - 20x47
BrandRingfeder
SGD93.70
Each
units
- 47mm - 27.5mm - - - -
RS Stock No. 188-3196
Mfr. Part No.7012 - 70x110
BrandRingfeder
SGD165.10
Each
units
- 110mm - 39.5mm - - - -
RS Stock No. 106-5536
Mfr. Part No.TLK110 16 X 24 mm
BrandTOLLOCK
SGD41.60
Each
units
16mm 24mm 44mm 42mm 180Nm - -40°C +300°C
RS Stock No. 188-3162
Mfr. Part No.4061 - 38x72
BrandRingfeder
SGD88.00
Each
units
29 mm, 30 mm, 31 mm 72mm - 30mm 890 nm, 970 nm, 980 nm - - -
RS Stock No. 477-6824
Mfr. Part No.ETP EXPRESS 22MM
BrandLenze
SGD230.25
Each
units
27mm 22mm 55.5mm 46mm 130Nm Steel -30°C +85°C
RS Stock No. 188-3202
Mfr. Part No.7012 - 95x135
BrandRingfeder
SGD185.28
Each
units
- 135mm - 39.5mm - - - -
RS Stock No. 477-6638
Mfr. Part No.ETP CLASSIC 20MM
BrandLenze
SGD228.91
Each
units
45mm 20mm 28mm 42mm 125Nm Steel -30°C +85°C
RS Stock No. 188-3187
Mfr. Part No.7012 - 40x65
BrandRingfeder
SGD102.66
Each
units
- 65mm - 27.5mm - - - -
RS Stock No. 106-5534
Mfr. Part No.TLK110 6 x 14 mm
BrandTOLLOCK
SGD38.98
Each
units
6mm 14mm 25mm 24mm 16Nm - -40°C +300°C
RS Stock No. 477-6953
Mfr. Part No.TLK110 12X18
BrandLenze
SGD38.62
Each
units
12mm 18mm 32mm 30mm 58Nm - -40°C +300°C
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