Black POM Connector with 8mm Center Cylinder | 4 Mounting Holes ±0.02mm Tolerance

We successfully delivered a precision machined black POM (acetal) connector component for an industrial automation equipment manufacturer. Machined from black POM-H (homopolymer acetal), this compact connector measures approximately 18mm × 10mm × 8mm thick and features four precision-drilled base mounting holes with a prominent 8mm-long cylindrical protrusion at the center. The component functions as a precision alignment and connection interface in automated assembly systems, combining dimensional stability with excellent wear resistance.

Project Overview

Key Technical Highlights

• Center Cylindrical Protrusion (8mm): Precision-machined 8mm cylinder extends from the base surface, serving as a locating pin, alignment guide, or connection interface for mating components.
• Four Precision Base Mounting Holes: Four accurately positioned mounting holes with ±0.02mm tolerance ensure secure and repeatable fixation to automation equipment or fixtures.
• Compact 18mm × 10mm Footprint: Space-efficient design ideal for integration into tight automation layouts where multiple connection points are required.
• Black POM Material Advantages: POM-H offers excellent dimensional stability, low moisture absorption, high stiffness, and natural lubricity for wear-resistant moving interfaces.
• Single-Setup Machining: Base contour, mounting holes, and center cylinder all machined in one operation, ensuring perfect perpendicularity and positional accuracy.
• Wear-Resistant Surface: POM's low coefficient of friction (0.2-0.35) makes it ideal for applications involving repeated engagement or sliding contact.

POM Material Properties

POM-H vs POM-C Comparison

Quality Verification

100% inspection performed using ZEISS CMM with 1.5μm repeatability. Center cylinder height and diameter verified. Mounting hole positions measured for accuracy. Perpendicularity of cylinder to base surface checked. Flatness verified on granite inspection table. First-article inspection report provided with each batch.

Industry Applications

✓ Industrial automation connection interfaces
✓ Precision alignment fixtures
✓ Pick-and-place end effector mounting
✓ Modular tooling connection points
✓ Sensor and actuator mounting blocks
✓ Assembly line locating pins
✓ Guide rail connectors
✓ Pneumatic component manifolds
✓ Conveyor system fixtures
✓ Packaging machinery change parts

Why Partner With Us?

• Expertise in POM (acetal) precision component machining
• Specialized in multi-feature parts with cylindrical protrusions
• Tight tolerance control on hole patterns and perpendicularity
• Cost-effective solutions for automation components
• Fast turnaround on prototypes and production runs
• Material certification available upon request
• Design for manufacturability guidance