Hollow Steel Flanged Shoulder Bushing for Automation Equipment

This is a quality Hollow Steel Flanged Shoulder Bushing for Automation Equipment from Qimao Metal Manufacturer, the center cavity allows passage of air lines, sensor wires, or lubrication tubes directly through the pivot point. eliminating tilt during press-fit installation.

Material is different by customer chosen, while the core remains ductile. Bore tolerance H7, outer diameter tolerance g6. Hollow section reduces rotating mass by ~35% versus solid equivalents, which directly lowers motor torque requirements and heat generation in high-speed indexing applications.

Product Parameter (Specification)

Product Feature

Hollow core –The Hollow Steel Flanged Shoulder Bushing for Automation Equipment pass wires, air lines, or cooling tubes directly through the pivot.

Integral flange – Eliminates separate thrust washers or retaining rings.

Case-hardened steel – 55–60 HRC wear surface with a tough, impact-resistant core.

Press-fit ready – Ground OD and bore, no line reaming required after installation.

Anti-rotation flats (optional) – For high-torque oscillation applications.

Application

• Hollow Steel Flanged Shoulder Bushing for Automation Equipment pick-and-place units with pneumatic grippers (air tubes routed through the bushing)

• Indexing dial tables where limit switches need center wiring

• Packaging film sealing jaws with cooling water lines

• Automated test probes (signal wires protected inside hollow shaft)

• Articulated robotic arms for palletizing (reduces swinging mass)

• Shaft support in vertical lift stations with central lubrication feed

Usage Guide

Step 1 – Housing prep

Check and confirm the Hollow Steel Flanged Shoulder Bushing for Automation Equipment machine housing bore tolerance. Chamfer entry edge.

Step 2 – Cold press (preferred)

Apply light oil to bushing OD. Use a flat arbor press tool contacting only the flange perimeter – never the hollow edge. Press until flange seats fully against housing face.

Step 3 – No reaming

Because we hone after heat treatment, the bore retains its finished size. Forcing a reamer will ruin the hardened surface.

Step 4 – Hollow core use

Route tubing or wiring through the center before inserting mating shaft. Secure wires using a non-metallic grommet at the non-flange end.

Step 5 – Shaft fit

Use g6 or f7 shaft tolerance. Lubricate with EP grease for first 200 cycles.