Union Special 39573-H Upper Knife Driving Arm

Description:

The Union Special 39573H Driving Arm is used in industrial sewing machine knife drive systems to actuate the upper knife assembly during cutting operations. Commonly installed in Union Special 39500 series overlock sewing machines and textile production equipment used in garment manufacturing and high-speed stitching applications. Maintenance teams and sewing equipment technicians use this part for replacement and preventive maintenance to maintain accurate knife movement and ensure dependable machine operation.

Applications:

The Union Special 39573H Driving Arm is designed for use in compatible Union Special industrial sewing machines requiring precise upper knife actuation. It is commonly utilized in apparel manufacturing facilities, textile processing plants, and commercial sewing environments to support efficient fabric trimming and maintain production efficiency.

Technical Specifications:

• Manufacturer Part Number (MPN): 39573H
• Product Type: Driving Arm
• Brand: Union Special
• Function: Actuates the upper knife assembly during sewing operations
• Equipment Type: Industrial Sewing Machine
• Compatible Systems: Union Special 39500 series overlock sewing machines
• Application: Upper knife drive and cutting mechanism operation
• Installation Type: Direct replacement component
• Position: Upper knife drive assembly
• Material: Metal construction
• Application Environment: Textile and garment manufacturing facilities
• Maintenance Purpose: Restores proper knife movement and machine performance

Common Replacements:

• Union Special 39573E Driving Lever
• Union Special 39573J Connecting Rod
• Union Special FP39573K Bushing