Metric Long & Extra Long Shoulder Bushings - Wring Fit Style

Q: How do I choose the correct inner diameter (d) for these metric long shoulder bushings?

The inner diameter d is specified as 18.011 ~ 80.016 mm . Select the d value that most closely corresponds to the leader diameter in your die set, then verify the intended slide fit using your internal tolerance/clearance standard (exact tolerance values are not included in the provided data). Because the bushings are offered in both ground and unground states, choose the finishing level that matches your required functional surface condition.

Q: What length (L) range should I use for deep die stacks and long guide engagement?

The available length L range is 69 ~ 149 mm . Use this to cover the required guide engagement zone in your die stack so that the bushings maintain alignment over the full travel where leader support is critical. For molds with greater shut height or deeper housings, the long/extra-long geometry helps reduce alignment drift across the stack.

Q: When should I specify ground vs. unground for wring fit performance?

This bushing series is available as Ground or Unground . If your design requires a tighter functional surface finish for consistent wring fit behavior and stable guide motion, specify ground . If your assembly strategy manages final fit through mating part condition or controlled clearances, unground may be acceptable, but you should validate against your die assembly requirements.

Q: Do these bushings support lubrication fittings, and how does the region affect selection?

The specification lists grease fitting options for both Europe and North America . Select the fitting type that matches your lubrication system standard for the production region to ensure compatibility with your grease lines and maintenance procedures. This helps maintain consistent lubrication at the guide interface, supporting long-term smooth motion and wear protection.

Q: What mounting features are compatible with this wring fit shoulder bushing design?

The provided description states compatibility with detachable mounting using clips and screws , and also mentions optional Loctite adhesive options. When designing for maintenance, use the detachable approach to enable replacement without fully disassembling the die set, which can improve uptime while preserving alignment performance.

Metric long & extra long shoulder bushings - wring fit style (bronze plated copper alloy) are engineered for die sets where rigid, precise guide motion matters. The detachable mounting approach supports service while maintaining stable alignment during production.

Wring fit guide rigidity helps maintain smooth motion and consistent die alignment
Bronze plated copper alloy construction provides wear protection for sensitive components
Compatible with detachable mounting using clips and screws, plus Loctite adhesive options
Designed for die set maintenance, reducing downtime and extending equipment lifespan

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Specifications

96 configurations available

d (Bushing inner diameter) (mm)	L (Length) (mm)	Ground / Unground	Grease fitting
18.011 - 18.005	70	Ground	Europe
18.011 - 18.005	70	Ground	North America
19.011 - 19.005	70	Ground	Europe
19.011 - 19.005	70	Ground	North America
24.011 - 24.005	80	Ground	Europe
24.011 - 24.005	80	Ground	North America
25.011 - 25.005	80	Ground	Europe
25.011 - 25.005	80	Ground	North America
30.014 - 30.008	90.00	Ground	Europe
30.014 - 30.008	90.00	Ground	North America
32.014 - 32.008	90.00	Ground	Europe
32.014 - 32.008	90.00	Ground	North America
40.014 - 40.008	100	Ground	Europe
40.014 - 40.008	100	Ground	North America
42.014 - 42.008	100	Ground	Europe
42.014 - 42.008	100	Ground	North America
50.014 - 50.008	110.00	Ground	Europe
50.014 - 50.008	110.00	Ground	North America
52.014 - 52.008	110.00	Ground	Europe
52.014 - 52.008	110.00	Ground	North America
63.016 - 63.010	128.00	Ground	Europe
63.016 - 63.010	128.00	Ground	North America
80.016 - 80.010	148.00	Ground	Europe
80.016 - 80.010	148.00	Ground	North America
18.011 - 18.005	69.00	Ground	Europe
18.011 - 18.005	69.00	Ground	North America
19.011 - 19.005	69.00	Ground	Europe
19.011 - 19.005	69.00	Ground	North America
24.011 - 24.005	80	Ground	Europe
24.011 - 24.005	80	Ground	North America
25.011 - 25.005	80	Ground	Europe
25.011 - 25.005	80	Ground	North America
30.014 - 30.008	89	Ground	Europe
30.014 - 30.008	89	Ground	North America
32.014 - 32.008	89	Ground	Europe
32.014 - 32.008	89	Ground	North America
40.014 - 40.008	99.00	Ground	Europe
40.014 - 40.008	99.00	Ground	North America
42.014 - 42.008	99.00	Ground	Europe
42.014 - 42.008	99.00	Ground	North America
50.014 - 50.008	109.00	Ground	Europe
50.014 - 50.008	109.00	Ground	North America
52.014 - 52.008	109.00	Ground	Europe
52.014 - 52.008	109.00	Ground	North America
63.016 - 63.010	129.00	Ground	Europe
63.016 - 63.010	129.00	Ground	North America
80.016 - 80.010	149.00	Ground	Europe
80.016 - 80.010	149.00	Ground	North America
18.011 - 18.005	70	Unground	Europe
18.011 - 18.005	70	Unground	North America

Product Guide

🏭Application Scenarios+

This wring fit shoulder bushing style is used in injection mold die sets that require rigid, repeatable leader/guide motion under high cycling. In automotive connector and terminal molds, the long and extra-long geometry helps maintain alignment across a tall die stack, reducing guide wear and keeping part edges consistent during fast mold close/open cycles.

In appliance and industrial housing tooling, the detachable mounting concept with clip-and-screw retention supports planned maintenance. When bushings are serviced without disturbing the entire die set, downtime is reduced while alignment performance is preserved.

The bronze plated copper alloy construction is suited to applications where controlled friction and wear protection around guide interfaces matter. Optional grease fitting provisions for Europe and North America further support stable lubrication, which helps sustain smooth motion over the bushing’s service life.

Wring fit supports guide rigidity for stable die alignment
Detachable mounting enables easier maintenance and replacement
Long/extra-long length supports alignment in deep die stacks

🔧Material & Process Details+

These Metric long & extra long shoulder bushings use a bronze plated copper alloy for the guide interface. Copper alloy base material provides good machining characteristics and thermal responsiveness, while the bronze plating improves wear behavior at sliding contact points where repeated motion and lubrication occur.

Heat treatment details are not specified in the provided data, so hardness and any specific heat-treatment state (e.g., quenched & tempered, nitrided) should be confirmed with the supplier’s material certification for your exact production lot.

Manufacturing is typically centered on precision boring for the specified inner diameter d (18.011 ~ 80.016 mm), and selecting either ground or unground variants for surface/fit needs. The primary trade-off is between tighter accuracy and preparation cost: ground bushings generally support closer functional fits, while unground may be used when final sizing or assembly clearances are managed elsewhere.

📐Sizing & Selection Guide+

Select the bushing by matching the guide bore and working length to your leader/core needs. The inner diameter d is available from 18.011 to 80.016 mm, so choose the value closest to the mating leader diameter your die set uses.

Then verify the axial length L, which ranges from 69 to 149 mm. Use the available length to cover the intended guide engagement zone in the die stack; long and extra-long versions are typically selected for deeper die housings where alignment must be maintained over a greater travel distance.

d match: target the leader diameter to achieve the required slide fit and guide rigidity
L match: ensure full support across the functional contact region
Ground vs. unground: pick ground when tighter functional surfaces are required; use unground when assembly clearance strategy allows

For fit, the wring fit style is intended to provide stable guide positioning; however, the exact clearance/tolerance band is not provided in the data. Confirm the required press/wring tolerance with your die design standards and the bushing’s specified tolerance at the selected d and L range.

Frequently Asked Questions

How do I choose the correct inner diameter (d) for these metric long shoulder bushings?+

The inner diameter d is specified as 18.011 ~ 80.016 mm. Select the d value that most closely corresponds to the leader diameter in your die set, then verify the intended slide fit using your internal tolerance/clearance standard (exact tolerance values are not included in the provided data).

Because the bushings are offered in both ground and unground states, choose the finishing level that matches your required functional surface condition.

What length (L) range should I use for deep die stacks and long guide engagement?+

The available length L range is 69 ~ 149 mm. Use this to cover the required guide engagement zone in your die stack so that the bushings maintain alignment over the full travel where leader support is critical.

For molds with greater shut height or deeper housings, the long/extra-long geometry helps reduce alignment drift across the stack.

When should I specify ground vs. unground for wring fit performance?+

This bushing series is available as Ground or Unground. If your design requires a tighter functional surface finish for consistent wring fit behavior and stable guide motion, specify ground.

If your assembly strategy manages final fit through mating part condition or controlled clearances, unground may be acceptable, but you should validate against your die assembly requirements.

Do these bushings support lubrication fittings, and how does the region affect selection?+

The specification lists grease fitting options for both Europe and North America. Select the fitting type that matches your lubrication system standard for the production region to ensure compatibility with your grease lines and maintenance procedures.

This helps maintain consistent lubrication at the guide interface, supporting long-term smooth motion and wear protection.

What mounting features are compatible with this wring fit shoulder bushing design?+

The provided description states compatibility with detachable mounting using clips and screws, and also mentions optional Loctite adhesive options.

When designing for maintenance, use the detachable approach to enable replacement without fully disassembling the die set, which can improve uptime while preserving alignment performance.