Zhejiang Lejiang Machine Co., Ltd.

Zhejiang Lejiang Machine Co., Ltd.

Basic Adjustment Standards for Lockstitch Sewing Machines

2025 07/19

The basic adjustment of a lockstitch sewing machine is the primary step to ensure efficient operation and involves standardizing several key parameters. First, the needle bar height must strictly follow the manufacturer's specifications, typically requiring the needle tip to maintain a specific clearance from the needle plate to avoid skipped stitches or thread breakage. Second, the choice of lubricating oil is crucial; high-viscosity industrial-grade lubricants should be used, and the oil level should be checked regularly to ensure adequate lubrication and reduce frictional wear. In addition, the feed dog adjustment must be coordinated with the presser foot pressure to maintain uniform fabric feeding and prevent wrinkling or misalignment of the material.