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8

200

40

M8

40

Ø7

8

200

40

Ø 7

40

M8

8

5. Tightening the Timing Belt:

 

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A particularly “stiff” Timing Belt will result in low elongation in operation – 

and therefore high positioning accuracy for Linear Units driven by a Timing 

Belt.

 

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The pulley/Timing Belt combination is virtually play free.

 

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Belt tension is easily adjusted, all adjustment elements are accessible from 

outside.

 

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An M10 tensioning screw with a fine thread is located under the cover of the 

Reverse Unit that incorporates the tensioning device.

 

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The tensioning mechanics are designed so that turning clockwise tightens 

the belt. Slotted link mechanics.

 

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An adjustment range of 18 mm in the tensioning axle corresponds to an 

elongation of 36 mm in the Timing Belt (1 mm tensioning adjustment equals 

2 mm elongation in the Timing Belt).

 

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Maximum elongation in the Timing Belt = 36 mm (this yields a maximum 

theoretical Timing Belt length of 36 metres with max. 1‰ elongation).

 

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Recommended tensioning method:  

Make two marks on the Timing Belt (e.g. 1000 mm apart) 

Tension the Timing Belt, 1‰ lengths (maximum elongation!)  

Check distance (markings) until they are 1001 mm apart.  

6. Extending the carriage with Line 8 Profiles

 

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The preassembled carriage allows you to use the groove of a Line 8 Profile to 

design a customised superstructure for the carriage.

 

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For this purpose, two centring sleeves are included with the carriage, which 

bring the profile groove into alignment, secure it in place and position the 

profile in the desired orientation.

 

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Six individually selectable M8 screws can be used to fasten the profile or a 

purpose-made panel to the carriage.

 

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Threads in the carriage: M8x18.  

Содержание 0.0.641.21

Страница 1: ...Linear Unit KRF 8 80x40 ZR Notes on Use and Installation ...

Страница 2: ...ty first in mind Always switch off the drive assembly before you start working on Linear Unit KRF 8 80x40 ZR Ensure the drive unit cannot be switched on unintentionally e g by affixing warn ing notices at the activation point or by removing the fuse from the power supply Do not place your hand within the operating range of moving parts in Linear Unit KRF 8 80x40 ZR when the unit is still switched ...

Страница 3: ... completed machine The general safety information applies to the entire lifecycle of the partly completed machine 1 During transportation Observe the handling instructions on the packaging Until it is installed the product must be stored in its original packaging protected from moisture and damage Ensure that moving parts are secured when in transit and cannot cause any damage 2 During installatio...

Страница 4: ...max 10 m s Max acceleration amax 10 m s System related frictional moment Mfrictional 2 Nm Effective radius of pulley rW 23 1 mm Tightening torque for the screws used M3 1 5 Nm M5 6 Nm M6 10 Nm M8 25 Nm The special Timing Belt Gearing type AT profile 5 mm pitch Belt width 25 mm 0 0 5 mm Special belt with 0 9 mm steel wires for high positioning accuracy Wire strength 4000 N Specific spring rate 0 99...

Страница 5: ...size ratio of all item drive elements Light quiet running rollers arranged in a criss cross pattern for high speed Innovative track technology hardened steel tracks 50 m steel strip supplied as roll rigidly connected to the aluminium guide profile Solid machined rigid sliding carriage with a broad range of attachment options and integrated Timing Belt clamping mechanism Fully usable Profile 8 groo...

Страница 6: ... carriage is supplied as a preassembled construction kit with one side that is screwed firmly in place while the opposite side is a floating bearing end The floating bearing end incorporates two adjusting screws with anti clock wise fine threads for moving and adjusting the floating bearing end Consequently the floating bearing is secured by turning clockwise as usual turn towards the track on the...

Страница 7: ...ectly There is one Reverse Unit for tensioning the Timing Belt There are two Reverse Units for driving the axis The position of the drive shaft is different on each of these Reverse Units and must be specified during project engineering 4 The Timing Belt Timing Belt length LZ 2 x LProfile 190 Timing Belt pretension max 1 Special Timing Belt To enable higher speeds Quiet and smooth running To minim...

Страница 8: ...ming Belt 1 mm tensioning adjustment equals 2 mm elongation in the Timing Belt Maximum elongation in the Timing Belt 36 mm this yields a maximum theoretical Timing Belt length of 36 metres with max 1 elongation Recommended tensioning method Make two marks on the Timing Belt e g 1000 mm apart Tension the Timing Belt 1 lengths maximum elongation Check distance markings until they are 1001 mm apart 6...

Страница 9: ...of area available on the motor side for the customer to machine as required New coupling made from stainless steel A complete component and therefore entirely play free Nominal torque 60 Nm Caution Timing Belt transfers only 23 Nm Axial deviation 0 2 mm Radial deviation 0 3 mm Angular deviation 1 4 Clamping screws DIN 912 M6 Tightening torque 14 5 Nm Up to 50 deviation full nominal torque can be t...

Страница 10: ... Unit into the Coupling Housing of the Drive Set Tightening torque M6 10 Nm Bore out the equaliser coupling to match the diameter of the drive shaft of the motor or transmission you are using and clamp it to the drive shaft in line with the mounting dimensions below kmin 42 mm kmax 62 mm Next insert the drive and coupling into the Coupling Housing of the Drive Set and connect them to the drive sha...

Страница 11: ...raphite and MoS2 additives must not be used The maintenance openings page 6 are located on both sides of the preassembled carriage All 4 End Cap and Lubricating Systems are re oiled through the maintenance openings Minimum stroke full lubrication Hmin 100 mm Maintenance interval every 6 months or every 2 500 km Fill quantity approx 1 ml per End Cap and Lubricating System and maintenance interval 1...

Страница 12: ...tem Industrietechnik GmbH Made in Germany 0 4 120 32 02 2012 item Industrietechnik GmbH Friedenstrasse 107 109 42699 Solingen Germany Phone 49 212 6580 0 Fax 49 212 6580 310 info item24 com www item24 com ...

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