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Shaft Connections Mechanical locking bushes
Locking bushes Clutches & Brakes Panasonic products Torque limiters Linear motion Gears/geared motors Screw Jacks Signalling & Displays

Tollok S.p.A are a leading manufacturer of locking bushes with plants in Italy and the USA. They joined the Rexnord Group in 2015. Their wide range allows these friction connections to replace keyways in all industrial machinery.

Compared to traditional taperlock bushings, also known as taper bush or taper lock,  mechanical locking bushes transmit higher torques and offer a wide range of designs.  They are also known as compression couplings as they apply compression onto the shaft and keyless bushings as there is no keyway.  Dimensionally many models have standard dimensions and can be interchanged with other manufacturers such as Ringfeder and Ringspann.

Advantages over taper bushes include easy axial and radial adjustment.

TOLLOK MECHANICAL LOCKING BUSHES

MECHANICAL KEYLESS SHAFT TO HUB CONNECTIONS

MAIN MODELS

TLK110 COMPACT LOCKING BUSHES

Shafts 6 to 130mm

Thin wall construction suits hubs with

small diameters, interchangeable with some ETP products.

Medium torques

Self-centering

No axial hub movement during mounting

Very low surface pressures

Good concentricity 0.02 - 0.04mm  TIR

Machine to tolerances H8-h8, Rt < 16mm

See catalogue pages 6 to 7

TLK130/131 GENERAL PURPOSE LOCKING BUSHES

Shafts 20 to 180mm

General purpose designs, TLK131 prevents axial hub movement during mounting Medium to high torques        

Self-centering

Low to medium surface pressures

Economic

Good concentricity 0.02 - 0.04mm TIR

Machine to tolerances H8-h8, Rt < 16 Nm

See catalogue pages 8 to 9

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Tollok locking assemblies, also known as bushings, part of the Techdrives range, connect all sorts of hubs, sprockets, pulleys and gears to shafts without keyways, splines, circlips or collars.  The connection is backlash free without fretting and can easily be dismantled and re-used.  Locking bushes are also known as locking assemblies, locking elements, friction joints and bushings.

Locking bushes use precision cones to transmit forces.  Clamping screws draw the cones together.  As they ride over each other, the outer cone expands and grips the hub.  Similarly the inner cone contracts to grip the shaft.  When fully mounted the Tollok makes a backlash-free and torsionally rigid connection between hub and shaft.

A wide range of locking bush models suit different requirements.  The choice depends on the mounting dimensions, the level of torque required and whether the connection needs to be self-centring.

Dimension calculations are given in the back of the catalogue.

Fitting and removal instructions are given in the catalogue.

TLK110 compact locking bushes TLK110 Compact locking bushes TLK130/131 General purpose locking bush TLK130/131 General purpose

TLK200 INDUSTRY STANDARD LOCKING BUSHES

Shafts 20 to 900mm

General purpose bushes to industry standard

dimensions accepting wide tolerances

Medium to high torques

Not self-centering (use a guide)

Medium to high surface pressures

No axial hub movement during mounting

Readily available

Concentricity depends on guide

Accepts wide tolerances H11-h11, Rt < 16Nm

See catalogue pages 14 to 15

TLK200 Industry Standard bushes Industry standard bushes

TLK350 EASY MOUNTING LOCKING ASSEMBLIES

Shafts 6 to 50mm

Economical bushes with few screws to

make mounting easy

Medium to high torques

Self-centering

Small hub movement during mounting

Very low surface pressures

Good concentricity 0.02 - 0.04 TIR

Machine to tolerances H8-h8, Rt < 16 Nm

See catalogue page 20

TLK130/131 general purpose

TLK400/450 HEAVY DUTY LOCKING BUSHES

Shafts 25 to 400mm

High torque transmission with the capacity to

accept bending moments from rolls.

Very high torques

Self-centering

TLK400 has no hub movement during

mounting, TLK450 has small movement but

7% more transmittable torque.

Low surface pressures

Good concentricity 0.02 - 0.04mm TIR.

Machine to tolerances H8-h8, Rt < 16NM

See catalogue page 21 to 26

TLK200 Industry Standard Bushes TLK200 Industry Standard Bushes

OTHER MODELS


TLK 132/133/134/139 BUSHES

Locking bushes that are variants on the popular 130/131 series.  Suits shafts from 14 to 200mm, medium torques, economic prices

See catalogue pages 10 to 13

TLK250 LOW COST BUSHES

Simple low torque locking bushes that are fixed by a ring nut around the shaft, sizes 14 to 70mm.

See catalogue page 16

TLK300 LOCKING RINGS

Taper rings in pairs suiting integration to machine designs where the axial force is applied externally, shafts 6 to 540mm.

See catalogue page 18

shrink disc locking bushes

TLK500 RIGID COUPLING

Rigid couplings to connect two shafts of equal diameter from 17-80mm/(unequal shafts on request).  Creates a simple, low cost keyless connection that is torsionally rigid and backlash free.

See catalogue page 27

rigid coupling

TLK600 SERIES SHRINK DISC LOCKING BUSHES

Tollok shrink disc compression couplings apply external compression force to create a friction connection between a shaft and a hollow shaft.  The connection is backlash free, transmits high torque with high concentricity and is demountable.

See catalogue pages 28 to 37

Locking bushes low cost bushes locking rings

Part of the Lenze Selection range supported internationally by the Lenze Group