Keyless Locking Devices

Traditional shaft-hub connections are unsatisfactory in many applications, mainly where frequent start-stop rotations are involved. Over time, keyway engagement becomes less accurate due to mechanical wear.
The locking assembly produced by REACH bridges the gap between the shaft and the hub and distributes the power transmission over the entire surface, while with the key connection, the transmission is only concentrated in a limited area.
Keyless locking devices, also known as locking assemblies or keyless bushings, achieves non-keyed connection between a machine part and a shaft by generating a huge clamping force between the inner ring and the shaft, and between the outer ring and the hub through the action of high-strength tensile bolts. The resulting zero backlash mechanical interference fit is suitable for high torque, thrust, bending, and/or radial loads, and unlike other installation techniques, it does not wear or impact even under high cyclic fluctuations or reverse loads.

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Features

Easy assembly and disassembly
Overload protection
Easy adjustment
Precision location
High axial and angular positioning accuracy
Ideal for applications involving acceleration and deceleration
Zero backlash

REACH® Keyless Locking Elements Application Examples

Automatic equipment

Pumps

Compressor

Construction

Crane and hoist

Mining

Packing machines

Printing plant - Offset press machine

Printing Machines

Solar Energy

Wind power

REACH® Keyless Locking Elements Types

REACH 01

Not self-centering, not self-locking
Two thrust rings with double taper design
Medium to high torque
Tolerance: shaft H8; hub bore H8

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REACH 02

Self-centering, self-locking
Fixed axial hub position during tightening
Single taper design
Suitable for applications which require low hub pressures.
Tolerance: shaft H8; hub bore H8

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REACH 03

Not self-centering, Not self-locking (self-releasing)
Two tapered rings
Low axial and radial dimensions
Suitable for applications that require smaller dimensions
Compact and light
Tolerances (for shaft dia. < = 38mm): shaft h6; hub bore H7
Tolerances (for shaft dia. > = 40mm): shaft h8; hub bore H8

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REACH 04

Self-centering, self-locking
Single taper design
Composed of an inner ring and outer ring both with slits
Suitable for applications that require excellent hub-to-shaft concentricity and perpendicularity.
Tolerances: shaft h8; hub bore H8

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REACH 05

Self-centering, self-locking
Single taper design
Composed of an inner ring and outer ring both with slits.
Particularly suitable for applications that require good hub-to-shaft concentricity and perpendicularity.
Tolerances: shaft h8; hub bore H8

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REACH 06

Self-centering, self-locking
Fixed axial hub position during tightening
Single taper design
Composed of an inner ring and outer ring both with slits.
Particularly suitable for applications that require good hub-to-shaft concentricity and perpendicularity.
Also used for locking hubs with lower mechanical properties.
Tolerances: shaft h8; hub bore H8

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REACH 07

Self-centering, self-locking
Fixed axial hub position during tightening
Single taper design
Composed of an inner ring and outer ring both with slits.
Particularly suitable for applications that require excellent hub-to-shaft concentricity and perpendicularity.
Also used for locking hubs with limited widths.
Tolerances: shaft h8; hub bore H8

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REACH 11

Self-centering, self-locking
Single taper design
Tolerances: shaft h8; hub bore H8

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REACH 12

Self-centering, self-locking
Single taper design
High torque
Low contact surface pressure
Tolerances: shaft h8; hub bore H8

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REACH 13

Self-centering, self-locking
Single taper design
Compact and simple structure
Small ratio of inner diameter to outer diameter, very suited for connecting small diameter hubs
Tolerances: shaft h8; hub bore H8

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REACH 15

Self-centering, self-locking
Single taper design
Composed of an inner ring and outer ring both with slits.
Particularly suitable for ap-plications that require excellent hub-to-shaft concentricity and perpendicularity
Allows the same hub, with the same external diameter, to be used on shafts of different diameters
Tolerances: shaft h8; hub bore H8

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REACH 16

Self-centering, self-locking
Single taper design
Tolerances: shaft h8; hub bore H8

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REACH 17

Not self-locking and not self-centering
Composed of two tapered rings, an inner ring, a slit outer ring and a ring nut with locking washer
No axial fixation of hub during tightening
Low torque capacity and low contact pressures
Suitable for applications that require reduced radial and axial dimensions
Particularly suitable for applications without screw tightening space
Tolerances: shaft h8; hub bore H8

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REACH 18

Self-centering, self-locking
Fixed axial hub position during tightening
Single taper design
Composed of an inner ring and outer ring both with slits
Particularly suitable for applications that require excellent hub-to-shaft concentricity and perpendicularity.
Tolerances: shaft h8; hub bore H8

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REACH 19

Self-centering, self-locking
Composed of two tapered rings and one outer ring with a slit
Particularly suitable for applications that require high torque transmission.
No axial fixation of hub during tightening
Tolerances: shaft h8; hub bore H8

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REACH 20

Self-centering, self-locking
Single taper design
Tolerances: shaft h8; hub bore H8

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REACH 21

Self-locking and self-centering
Composed of two tapered rings, an inner ring, a slit outer ring and a ring nut with locking washer.
Low torque capacity and low contact pressures
No axial fixation of hub during tightening
Suitable for applications that require reduced radial and axial dimensions
Particularly suitable for applications without screw tightening space.
Tolerances: shaft h8; hub bore H8

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REACH 22

Composed of two tapered rings and a slit inner ring
Particularly suitable for clamping two shafts where medium-high torque transmission is required.
Tolerances: shaft h8; hub bore H8

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REACH 33

Self-centering, self-locking
Without Axial Displacement
Transmit extremely high torques
Tolerances: shaft h8; hub bore H8

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REACH 37

Self-Centering
Without Axial Displacement
For superb centering and high torque transmission
Tolerances: shaft h8; hub bore H8

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