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UKIVA Machine Vision Conference

Virtual

15/07/2021

Join us on 15 July 2021 on the MVC Technology Presentation Hub and explore eight online seminar theatres. (more)

PPMA Show 2021

NEC, Birmingham(B40 1NT)

28/09/2021 - 30/09/2021

PPMA Show 2021 will be the UK’s largest ever event dedicated to state-of-the-art processing and (more)

Southern Manufacturing

Farnborough, Hants(GU14 6TQ)

06/10/2021 - 07/10/2021

Southern Manufacturing and Electronics is the most comprehensive annual industrial exhibition in the (more)

Advanced Engineering 2021

NEC Birmingham(B40 1NT)

03/11/2021 - 04/11/2021

Join us in our 12th and most important edition to date, as we invite engineers and management from all (more)

Precision linear actuators provide unparalleled force and power

Precision linear actuators provide unparalleled force and power

Following its recent distribution agreement with Creative Motion Control (CMC), Mclennan now supplies and supports the USA motion specialists’ broad range of precision grade linear actuators. The CPD-series high force linear actuators offer unmatched size-for-size power and force specifications in a totally unique, compact and incredibly robust design based on high load and long-life precision roller screws and patented grooved roller bearings.

With the possibility to select much more compact package sizes for the same power ratings, these attributes perfectly suit cost-effective applications in presses, broaching or stamping machines, injection moulding machines, hydraulic cylinder replacement and anywhere where controlled high linear force and/or precision positioning is required.

CMC’s CPD series linear actuators feature an inline or straight-through motor mounting geometry that is compatible with virtually any manufacturer’s servo or stepper motors. The maximum standard product size, the CPD-800, has a square section size of around 203 mm x 203 mm and a stroke length from 100 mm to 1.5 metres, and can produce a maximum continuous force of 423 kN (motor dependant). The smallest standard size, the CPD-250, with a 63.5 mm square section produces 30 kN. These impressive specifications hold true with repeatability of around 0.02 mm and maximum actuator backlash of 0.075 mm. The robust actuator’s static force capability is equally impressive.

These convincing specifications are directly due to the drive chain design that utilises CMC’s roller screw and patented grooved roller bearing components, enabling a size-for-size comparison that far outperforms the competition that relies on traditional ballscrew drives and ball or roller bearing support mechanics. The IP67 rated actuators also feature CMC designed and manufactured planetary gearboxes to suit application load and speed requirements - ensuring positioning precision is maximised rather than use spur gears or belt drive reduction mechanics. A wide choice of mechanical interfacing includes clevis pin, foot, flange or trunnion mounts, threaded rod ends etc. The CPD series is also available with a unique oil lubrication system yielding the actuator maintenance-free for the life of the unit for most applications.

CMC’s precision roller screws employ threaded rollers instead of the ball bearings that are used in ball screws, providing a much larger contact surface for load transfer. This correlates to a much higher stiffness and shock resistance plus increased load capacity and longer life. CMC’s unique and patented grooved roller bearings utilise a grooved inner and outer race with grooved rollers sandwiched in-between and held captive with retainer rings. This compact bearing arrangement offers much longer life and much higher load capacity than angular contact bearings, ultimately exceeding the life of traditional bearings by a factor of 5 to 10.

Available as thrust, radial and ‘combo’ bearings their increased size-for-size load capability allows smaller bearings sizes to be used, and furthermore CMC’s flexibility in manufacture can allow for customisation in size and materials opening possibilities for non-magnetic or other environment-sensitive installation. This technology also lends itself to pre-lubricated bearing designs that provide maintenance-free use and extended life for some applications.

CMC also manufactures an alternative actuator range, the LPD series, that employs its roller screw technology and standard support bearings for application areas that may not require such high-performance. CPD and LPD series actuators may be fitted with limit switches, absolute linear encoders, load sensors and flexibility in design is assured with a complete customisation service where required.

The high efficiency of the individual roller screw and grooved bearing components as well as the overall performance of CMC’s linear actuators also offer energy cost savings and overall TCO can be reduced due to increased life and low maintenance factors.

 

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Latest news about Linear acctuators

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