Available with external vees and in 4 sizes from 148mm to 300mm in diameter as standard, ALR Rings are machined from high strength aluminum alloy and are anodized for excellent durability with an attractive finish. A number of special rings are also possible, such as additional diameters and thicknesses, rings with internal vees, gearcut rings, and rings machined in the form of self aligning timing belt pulleys.

Matched to run perfectly on the surface of the Aluminum Rings are Bishop-Wisecarver’s Size 2 DualVee® polymer overmolded guide wheels with integral studs. The outer portion of the polymer wheels are comprised of a high performance plastic molded onto a stainless steel bearing and stud which allows for smooth, anti-friction motion and little wear on the aluminum ring vees. For smaller, lighter applications, Bishop-Wisecarver’s Size 1 and Size 0 polymer wheels can also be specified.

Bishop-Wisecarver
www.bwc.com

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PDU2M is comprised of a rigid but lightweight aluminum slotted profile fitted with a toothed belt drive and carriage which effectively encloses the unit. Rated for operating speeds up to 6m/s and loads up to 750N, PDU2M’s 20AT3 belt allows for driving forces up to 280N. Left, right or double drive shafts can be specified together with a range of options such as brakes, positioning encoders and mechanical or inductive limit switches. Internal bumpers provide end of stroke protection at both ends.

Key to this unit is the extra ultra-high performance HepcoMotion Herculane® wheels that are mounted on adjustable eccentric studs. These wheels run virtually friction-free on the inside of the profile providing stable support for the carriage plate; felt wipers sweep debris from their path. Several carriage styles are available to allow for quick and easy construction of multi-axis systems with minimal brackets and hardware.

PDU2 is fully compatible with aluminum profile systems (which Bishop-Wisecarver carries) and is an ideal replacement for failing ball-based systems that are unable to match its speed and reliability.

Bishop-Wisecarver
www.bwc.com

Linear Motion Tips

Housed on a high strength aluminum beam and fitted with a stainless steel sealing band, the PSD80 uses Herculane wheels mounted to an adjustable carriage, offering long life and no re-lubrication. Single or multiple carriages on a unit are possible and can handle loads to 500N. A stainless steel lead screw provides actuation with pitch ranges of 4, 15, 25 and 70mm. The 25mm lead is particularly useful in Z axis applications, while the 70mm screw pitch satisfies the higher speed pick and place requirements and allows speeds up to 1 m/s and thrust loads to 300N. The lead screw is available in right and left handed threads and offers smooth, strong and precise actuation. A ball screw can be supplied for applications that require greater positioning accuracy.

PSD80 is supplied as a closed or open format dependent upon the application being subject to the ingress of dirt. The closed unit is rugged, tolerant of debris, and offers many mounting options while the open version is a lower cost solution that is compact, light, and has low friction. Where two units are to be used in parallel, a “slave axis” without the driving screw can be specified for both closed and open units. Adding to its flexibility, the PSD80 is available in a completely corrosion resistant version, as well as a double acting version for applications that require symmetrical movement from opposing carriages.

Bishop-Wisecarver
www.bwc.com

Linear Motion Tips