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23 size stepper motor featuring excellent EMC performance fitted with an eight pin UTO metalised connector to further aid the EMC characteristics.  1.8° step angle available in four torque sizes in the range 0.35Nm to 1.4Nm. These high quality rugged stepper motors offer excellent price and performance. The 23HT18C series Stepper Motors can aslo be supplied with the corresponding mating plug assembly and screened cables to maintain the high EMC performance, email for prices.

• High Torque
• Low Vibration
• Special versions available on request
• Simple connection via 8-way metalised UTO connector
• Unipolar, Bipolar Parallel or Series connection

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34 size stepper motor featuring excellent EMC performance fitted with an eight pin UTO metalised connector to further aid the EMC characteristics.  1.8° step angle available in three torque sizes in the range 2.45Nm to 7.35Nm. These high quality rugged stepper motors offer excellent price and performance. The 34HT18C series Stepper Motors can aslo be supplied with the corresponding mating plug assembly and screened cables to maintain the high EMC performance, email for prices.

• High Torque
• Low Vibration
• 70mm to 115mm long
• Special versions available on request
• Simple connection via 8-way metalised UTO connector
• Unipolar, Bipolar Parallel or Series connection

	Mclennan are an official distributor for the new Portescap h3 series Hybrid Stepper Motors

Portescap’s h3 hybrid product family offers industry leading performance allowing you to maximize throughput and minimize product size. The Portescap h3 series offers customised windings allowing for higher speed operations whilst maintaining accuracy. Industry leading torque performance of the h3 series and customized designs for tailoring the optimized product to your application.

Sigmax® Enhanced Magnetics, torque enhancement, unipolar and bipolar windings and custom designs available upon request.

• 10% Lower Power Consumption
• 15% Torque increase over standard competitors motors
• 40% Additional Torque Increase with Enhanced Version
• NEMA 17 up to 69 oz-in holding torque in 34, 40 and 48 mm stack lengths
• NEMA 23 up to 502 oz-in holding torque in 43, 54, 84 and 114 mm stack lengths
• Neodymium Iron Boron high energy magnets - deliver optimized torque density

The 16 HS series of hybrid stepper motors provide 200 steps per revolution, 1.8° step, (0.9° or 400 steps in ½ step mode) and are ideal for instrumentation drives requiring a combination of compact dimensions, high dynamic performance and accuracy. The motor is physically interchangeable with the larger 17HS model but its reduced overall frame size and reduced length makes it ideal for use in applications where space is at a premium. Available with a choice of windings permitting operation with Unipolar or bipolar drive circuits, it offers an excellent combination of performance, reliability, and quality at economic prices ideally suited to OEM manufacturers of quality instrumentation products.

Unipolar or bipolar windings, 1.8° step, holding torque between 5Ncm and 1 Ncm. Ideal for high precision instrumentation drives.

High performance NEMA 17 size hybrid stepper motor providing 200 steps per revolution, 1.8° step, (0.9° or 400 steps in ½ step mode). Utilising advanced high energy magnet technology for increased torque with low inductance windings for high speed performance. This unit is ideally suited to applications that require high dynamic performance where space is at a premium. The 17HS-240E motor is designed specifically for use with bipolar drive circuits such as the MSE570. Despite the high quality of the 17HS-240E, the units remain competitively priced and will therefore appeal to both small and medium volume OEM users.

High performance NEMA 17 size motor with rear shaft, 1.8° step, holding torque 29Ncm.
For increased torque or resolution at reduced speed the motor may be fitted to an IP43 gearhead.

High performance NEMA 23 size HSX series hybrid stepper motors providing 200 steps per revolution, 1.8° step, (0.9° or 400 steps in ½ step mode). With a wide range of matched drives and control modules they enable complete systems to be economically constructed based on "in-service proven" technology.

Motors in NEMA 23 and 34 sizes, 1.8° step, holding torque between 37Ncm and 625Ncm. Dual track encoder option.

• Optional encoder or parking brake
• Choice of single or double shaft options
• 8 leads for unipolar or bipolar operation
• 50% more torque than conventional hybrid types
• Non-standard customised versions available to special order
• High energy Neodymium magnets for increased performance
• Choice of precision planetary gearheads for increased torque and resolution at reduced speed

Conforming to the international NEMA standard, and providing 200 steps per revolution, 1.8° step, (0.9° or 400 steps in ½ step mode). Internal construction is optimised for microstep use resulting in an improved smoothness of operation. Where increased torque and resolution is required at reduced speed a range of gearheads are available. The motors are suitable for use with either unipolar or bipolar drive circuits, the 23HS series having 8 leads to provide the choice of parallel or series connection. The 23HS series offer a choice of single or double shafts where encoders or parking brakes are required and a wide range of drive and control modules are available to construct complete high performance systems.

Motors are available in NEMA 17, 23 and 34 sizes, 1.8° step, with holding torques from 9Ncm to 330Ncm. Dual track encoder option.

Two phase hybrid motors in a range of frame sizes from 19 to 125 mm diameter with torque ratings from 0.0034 to 9.9Nm. Standard units provide 200 full steps per revolution, 1.8° step, (0.9° or 400 steps in ½ step mode). Alternative options providing 500 full steps per revolution are available to special order. VSS motors are designed for use in vacuum chambers, thereby eliminating the need for any motion feed-through which may generate particles. The motors are prepared with outgassing holes to avoid pockets of trapped gas and feature special materials, bearings and lubricants specifically designed for operation in vacuum conditions. Special preparation and cleaning make VSS motors an ideal use for operation in extreme vacuum conditions, 4 grades being available which cover use in various vacuum and radiation levels.

Two phase hybrid motors, frame sizes from 19 to 125 mm Ø, Vacuum rated up to 10-11 torr. Temperature range –270 to 300°C.

HS series stepper motors may be specified with an integral parking brake to maintain a desired position when the motor power is removed. The "B" series parking brake is primarily designed for operation of the motor in a static condition. Although when energised the motor will provide a high holding torque, the detent torque when the motor is de-energised is much smaller. If the motor is required to maintain the position of an unbalanced load when the motor is de-energised the use of a parking brake will overcome the possibility of loss of position. The actual torque that the parking brake needs to provide is, in practice, much smaller than the operating torque provided by the energised motor.

In most applications, typically 50% of the motor’s dynamic torque will be required to accelerate and decelerate the mechanism during each positioning cycle. Also transmission losses will result in overall system efficiency of typically 80%. These losses, caused by friction in the transmission system will provide a braking torque which assists the action of the parking brake. Consequently, in most applications a parking brake with a significantly lower torque rating than the motor can be specified.