Pivot Pin/Bushing: Pin Diameter 8-12 mm, Length 20-40 mm

Component Specifications

Definition

The pivot pin/bushing is a critical mechanical component in release handle mechanisms, consisting of a hardened steel pin rotating within a low-friction bushing. This assembly provides a precise pivot point that allows controlled rotational movement while maintaining alignment, reducing wear through proper lubrication channels, and ensuring consistent operation over thousands of cycles. It serves as the fulcrum for mechanical advantage in release systems.

Working Principle

The pivot pin rotates within the bushing to create a low-friction bearing surface, converting linear force from the release handle into rotational motion. The bushing distributes load evenly across the pin surface while maintaining precise clearance tolerances to prevent binding or excessive play.

Materials

Pin: Case-hardened steel (AISI 8620 or equivalent, HRC 58-62); Bushing: Bronze alloy (SAE 660 or C93200) with graphite impregnation or PTFE-lined steel for self-lubricating properties.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	20-40 mm
Pin Diameter	8-12 mm
Bushing ID/OD	ID matches pin diameter +0.02-0.05 mm clearance, OD 12-18 mm
Load Capacity	500-2000 N radial load
Surface Finish	Pin: Ra 0.4 μm max, Bushing: Ra 0.8 μm max
Operating Temperature	-20°C to +120°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 286-2, DIN 1494, ISO 4378-1

Parent Products

This component is used in the following industrial products

Release Handle/Mechanism

A manual or mechanical control device used to disengage the locking mechanism of a fifth wheel coupling.

View Product Details

Engineering Analysis

Risks & Mitigation

Wear-induced clearance leading to mechanism slop
Corrosion in humid environments
Lubrication failure causing seizure
Improper installation causing misalignment

FMEA Triads

Trigger: Insufficient lubrication
Failure: Increased friction leading to binding and eventual seizure
Mitigation: Implement automatic lubrication systems or use self-lubricating bushings; establish regular maintenance schedules

Trigger: Contamination ingress
Failure: Abrasive wear and scoring of surfaces
Mitigation: Install protective seals or shields; use closed housing designs; implement clean environment protocols

Trigger: Misalignment during installation
Failure: Uneven wear and premature failure
Mitigation: Use alignment fixtures during assembly; implement torque-controlled installation procedures; add alignment marks

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Pin diameter: h6 tolerance, Bushing bore: H7 tolerance per ISO 286-2

Test Method

Radial play measured with dial indicator under 100N load; wear testing per ISO 4378-1 with 100,000 cycles at rated load

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Pivot Pin/Bushing

Manufacturer profiles associated with Pivot Pin/Bushing.

Sourcing Pivot Pin/Bushing from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What lubrication is recommended for pivot pin/bushing assemblies?

Use lithium-based grease or synthetic lubricants compatible with both steel and bronze. For maintenance-free applications, self-lubricating bushings with graphite or PTFE impregnation are recommended.

How often should pivot pins and bushings be inspected?

Visual inspection every 500 operating hours, with dimensional checks every 2000 hours or during scheduled maintenance. Replace if wear exceeds 0.1 mm radial clearance or visible scoring is present.

Can pivot pins be used without bushings?

Not recommended. Direct metal-to-metal contact accelerates wear, increases friction, and can lead to galling. Bushings provide necessary wear surfaces and simplify replacement.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Pivot Pin/Bushing