Groschopp (Sioux Center, IA) has introduced an updated
Brushless DC (BLDC) motor and several gearmotor combinations. Due to the lack of wear components, the BLDC
motor is considered to be a maintenance-free, high reliability motor. Features include:
A life of 20,000+ hours.
Outside square dimensions of 73.3 to 90.2 mm
( 2.88" to 3.55").
Availability in 12, 24, and 163 VDC/115 VAC.
A totally enclosed, non-ventilated design.
Continuous rated speeds of 2,600 to 3,800 RPM.
Continuous rated torque of 1.8 to 10.8 in-lb.
Micro-Poly Lubrication Zero-Max (Plymouth, MN) Schmidt Offset Couplings now fea- ture needle bearings with internal micro-poly lubrication that do not require periodic maintenance. Other features include: Constant angular velocity and torque in a range of parallel shaft misalignments. A sealed bearing feature with no lube fittings. The ability to handle high amounts of parallel offset up to 17". Torque capacities up to 459,000 in-lbs. No imposition of side loads on shafts or bearings which eliminate radial shaft vibrations. www.zero-max.com ■ ■ ■ ■ ■
Low Wear, Low Friction
A new linear guide rail system, identified as the S99GWRM40 and
S99GWRM80 Series, from Sterling Instrument (New Hyde Park,
NY) features heavy-duty, low wear, low friction operation, without the
need for lubrication. Features include:
A specially formulated polymer material for the sliding element.
Lengths of 1,000, 2,000, and 3,000 mm.
A construction of hard anodized aluminum.
An aluminum plate, die cast zinc blocks, and J Polymer bearings.
Precision XY Linear Translation Stage The PI (Auburn, MA) miCos MCS XY precision linear translation stage was designed for industrial metrology applications, such as sur- face metrology, materials research, topographical measurements in semiconductor test & inspection, flat-panel manufacturing, as well as
optical inspection of precision machined parts. Features include:
The ability to handle loads up to 45 lbs.
Resolution as high as 5 nm, 1 nm resolution with reduced
Repeatability of 0.2 µm.
A novel PIOne interferometric linear encoder.
A 4" travel range in two orthogonal axes.
± 2 µm straightness and flatness of motion, yaw of ± 20 µrad,
and pitch of ± 40 µrad.