Locking assemblies and shrink discs

The non-positive shaft-to-hub connection. A zero backlash, frictional connection for hub bodies and hollow shafts.

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Taper bushings

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Locking elements

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Locking assemblies

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Locking assemblies for bending moments

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Shrink discs

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Rust-proof clamping connections

Our quality brands

SIT-LOCK Monolock locking devices

SIT-LOCK Monolock locking devices

Easy, fast, MONOLOCK

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SIT-LOCK keyless locking devices

SIT-LOCK keyless locking devices

The SIT-LOCK® keyless locking devices produced by SIT S.p.A. for more than 30 years are ideal for any shaft-hub connection application.

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Self-locking bushing

Self-locking bushing

Suitable for taper bores 1108, 1210, 1610, 2012, 2517 and 3020. With bore diameters from 12 to 70 mm.

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Taper bushing

Taper bushing

SER-SIT® taper bushing is designed to give the following features.

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RfN 4061

RfN 4061

Standard 3-piece version for high torques. Universal applications.

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RfN 7012 for bending moments

RfN 7012 for bending moments

Extremely slim versions for universal applications.

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RfN 7012.2 for bending moments

RfN 7012.2 for bending moments

Identical to the RfN 7012, but optimised for extreme loads.

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RfN 7015.0 for bending moments

RfN 7015.0 for bending moments

Transmits high combined forces and moments. Very good centring capability.

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RfN 7515 for bending moments

RfN 7515 for bending moments

Ideal for maximum torques, axial forces and radial forces; self-centring.

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RfN 8006 slit locking element

RfN 8006 slit locking element

Slit version

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RfN 8006 solid locking element

RfN 8006 solid locking element

Standard solid version

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RfN 7004

RfN 7004

The RfN 7004 locking assembly is an extended version of the tried-and-tested RfN 7003 series.

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RfN 7005

RfN 7005

Long 3-piece version for high torques, self-centring.

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RfN 4061 stainless steel

RfN 4061 stainless steel

Ideal stress distribution and maximum corrosion resistance

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RfN 7012 stainless steel

RfN 7012 stainless steel

Narrow locking assembly made of stainless steel.

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RfN 7012

RfN 7012

Ultra-narrow 4-piece version. Due to the clamping cones, there is no axial displacement. Self-releasing.

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RfN 7013.1 stainless steel

RfN 7013.1 stainless steel

Locking assembly with excellent radial run-out and a stainless steel flange, self-centring.

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RfN 7012.2

RfN 7012.2

Identical to the RfN 7012, but suitable for high bending moments thanks to the optimised screws.

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RfN 7013.1

RfN 7013.1

Short 3-piece version with flange, self-centring. Due to the flange, there is no axial displacement.

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RfN 7015.0

RfN 7015.0

5-piece precision locking assembly, self-centring. No axial displacement of the hub and shaft.

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RfN 8006 stainless steel

RfN 8006 stainless steel

RINGFEDER RfN 8006 locking elements can be used to establish compact, screwless, and wear-free shaft-hub connections

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RfN 7015.1

RfN 7015.1

5-piece precision locking assembly, self-centring. No axial displacement of the hub and shaft.

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RfN 7515

RfN 7515

Extended 3-piece version, self-centring. Suitable for bending moments and radial loads.

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