Product category:
Gears, brakes, couplings and engines
News Release from: ZF Great Britain | Subject: Planetary gearheads for precision servo systems
Edited by the Engineeringtalk Editorial
Team on 19 April 2005
CD simplifies planetary gearhead
selection
Specifying planetary gearheads for precision servo systems has just been made quicker and simpler with the new free selection CD available from ZF Industrial.
Specifying planetary gearheads for precision servo systems has just been made quicker and simpler with the new free selection CD available from ZF Industrial The CD enables engineers and designers to identify the correct inline planetary gearhead from the ZF PG range by entering performance requirements, specifying motor dimensions or entering model number
This article was originally published on Engineeringtalk on 7 Jun 2000 at 8.00am (UK)
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ZF Industrial's new WT range of gearheads provides machine designers with the convenient option of turning servomotor drive systems through 90 degrees.
Ideal for engineers and designers in printing, handling, robotics, winding and machine tool industries, the CD covers both single and twin stage gearheads with a range of ratios between 3:1 and 100:1.
Rated for motor input speeds from 3000 to 10,000rev/min as standard, the gearheads are compatible with a wide range of motor frame sizes and offer a broad range of fitting options.
With the inclusion of the new PG 25 unit, OEM's and users can also specify gearheads able to increase the torque of the smallest sizes of servomotors, providing greater flexibility to employ planetary systems for smaller, but still highly dynamic tasks in packaging, printing, labelling and x-y positioning applications.
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Users can specify a gearhead by entering the fields for smallest ratio, highest ratio, lowest nominal torque, required output torque and choosing from continuous duty (S1) or cyclic S4/S5 designs.
Other options include selecting compatibility according to the top 50 motor makes, fitting requirements or model number.
A simple-to-use interface also links to the main ZF Industrial website to bring the user the latest catalogue and operating instructions as PDF files.
PG gearheads offers all the traditional advantages of a planetary gearbox design: low weight, compactness and low noise, plus a combination of high efficiency and a low moment of inertia: two factors which keep energy losses to a minimum.
Also intrinsic to the design is a high degree of torsional rigidity.
It is this, and the guaranteed low levels of backlash, which makes the PG gear units particularly suitable for servo drive systems requiring exceptional levels of positional accuracy and reliability.
Key to the consistent and reliable performance of the PG gearheads is a specification that includes precision ground gears and high quality roller bearings.
Precision gear grinding (in pairs) is the reason for the extremely low backlash performance throughout the range, down to 3arc-min.
It also provides benefits in terms of quiet operation, with noise levels of the order of 65dB(A).
The roller bearings allow higher loads on the output shaft.
Their endurance, in combination with the high duty gearing, allows repeated stopping of the gearmotor without detracting from its precision performance. Request a free brochure from ZF Great Britain ...
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