Metric Short Shoulder Plain Bearing Bushings - Demountable

Demountable short-shoulder plain bearing bushings are used in die sets and leader systems where precise alignment is required during repetitive press cycles. They fit into leader/ejector space regions to guide the moving components and maintain consistent positional accuracy through start-stop loads.

• Automotive and forming tooling: The bushing’s short-shoulder geometry supports stable die-set guidance under sliding contact, and the detachable mounting enables faster service when wear develops.
• Industrial stamping and punching dies: Bronze-plated copper alloy options help provide smooth bearing behavior for lower-to-moderate load regimes, reducing vibration transmission to sensitive die sections.
• Maintenance-intensive production lines: The demountable design supports scheduled replacement without complete die teardown, minimizing downtime while preserving alignment over the life of the guidance system.

Use this variant when you need die-set guidance plus serviceability, with material choice (bronze-plated copper alloy or steel) matched to your load and wear environment.

This series is available in bronze-plated (copper alloy) or steel bearing materials, selected based on expected wear rate, load, and lubrication/maintenance practices in the die set.

• Bronze-plated copper alloy: Typically chosen for stable sliding behavior and good wear performance in guidance applications, where smooth movement and vibration damping are beneficial.
• Steel: Selected when higher structural strength and robustness are prioritized for the leader bushings within the die guide stack.

Heat treatment and hardness (HRC) are not provided in the supplied data for either option, so hardness targets should be confirmed with the material certificate for the specific DANLY IEM supply batch. In general, bronze-type bearings emphasize bearing stability, while steel options emphasize toughness and load capacity; the trade-off is often wear behavior versus strength depending on your operating conditions.

To select the correct demountable bushing, match your leader bushing pocket dimensions and stack-up requirements using the provided ranges: D1 = 18–80 mm, D2 = 28–100 mm, and L in approved lengths 34, 44, 46, 51, 60, 75 mm.

• Use D1 to fit the inner guide/leader interface (the contact diameter).
• Use D2 to match the outer shoulder/pocket diameter that locates the bushing in the die set.
• Choose L to ensure adequate bearing engagement length while avoiding over-constraint in the guide system.

Check clearance and fit requirements in your die design: if the bushing is used as a sliding guide with detachable mounting, confirm seating tolerances for the shoulder area and alignment features. Because only the nominal dimension ranges are provided (no tolerance bands), finalize tolerances using your die drawings and the manufacturer’s dimensional/fit guidance.