Product News: Mechanical Power Transmission, Materials & Material Processing

Shaft Coupling eliminates resonance problems in ball screws.

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Press Release Summary:

July 2, 2014 - Step-Flex™ Coupling eliminates resonance in stepper motor ball screw assemblies. Two-part elastomer element combination dampens vibration caused by actuator carrier trying to find its home position. Hard element being separated from aluminum alloy hubs by softer elastomer maintains sufficient torsional stiffness for precise positional accuracy while allowing minimal angular and parallel misalignment. Power-transmitting element also reduces counter force generated by misalignment.

Miki Pulley US

13200 Sixth Ave. N, Plymouth, MN, 55441-5509, USA

Original Press Release

New Shaft Coupling Solves Resonance Problems in Ball Screws

Press release date: June 21, 2014

Plymouth, Minnesota – Miki Pulley announces introduction of its Step-Flex™ Coupling for direct sale to OEM’s in North America.

The Step-Flex is an altogether new class of shaft coupling. This design was conceived to eliminate resonance in stepper motor ball screw assemblies. The innovative two part elastomer element combination dampens vibration caused by the actuator carrier struggling to find its home position by making small adjustments in rapid sequence.

With this construction, the hard (black) element is separated from the aluminum alloy hubs by a softer (green) elastomer. This maintains enough torsional stiffness for precise positional accuracy while still allowing for minimal angular and parallel misalignment, and absorbing vibration.  The power-transmitting element, consisting of different hardness layers also achieves a reduction in counter force generated by misalignment. This can greatly reduce the load on the bearing – resulting in reduced heat load.

• 5 sizes available
• Torque: 53 in-lbs. (6 Nm)
• Bore size range: 1/8” to 5/8” (3mm - 16mm)

Step-Flex applications include automation of all types where ball screws are used including packaging, semi-conductor assembly, laboratory automation and medical equipment. See this unique Miki Pulley coupling operate at: www.mikipulley-us.com

For more information about Miki Pulley Step-Flex couplings, call Jon Davidson at 1-800-533-1731. Email: jdavidson@mikipulley-us.com  The Miki Pulley US Sales Office, Zero-Max, 13200 Sixth Avenue North, Plymouth, Minnesota 55441-5509.  Fax: 763-546-8260.

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