Anti-Rotation Pin: Diameter 3-10 mm (standard range)

Component Specifications

Definition

A precision-engineered cylindrical pin designed to prevent rotational movement between mating components in meat processing vacuum pump seal assemblies. It ensures proper alignment and prevents seal wear by eliminating relative rotation between the seal housing and shaft, maintaining vacuum integrity and preventing contamination.

Working Principle

The anti-rotation pin functions by being inserted into precisely machined holes in two adjacent components, creating a positive mechanical lock that prevents relative rotational movement while allowing axial movement as needed. In vacuum pump seal assemblies, it specifically prevents the seal from rotating with the shaft, ensuring the seal remains stationary relative to the housing.

Materials

Stainless steel AISI 316 (1.4401/1.4404) or AISI 304 (1.4301) for corrosion resistance in food processing environments. Hardness: 30-40 HRC. Surface finish: Ra ≤ 0.8 μm.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	15-50 mm (customizable)
Chamfer	0.3-0.5 mm at both ends
Diameter	3-10 mm (standard range)
Tolerance	h6 (ISO 286)
Load Capacity	Shear strength ≥ 400 MPa

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 8734, DIN 7, ISO 286

Parent Products

This component is used in the following industrial products

Meat Processing Vacuum Pump Seal Assembly

This sealing assembly is a specialized component designed for vacuum pumps used in meat processing and preservation systems.

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Engineering Analysis

Risks & Mitigation

Pin shearing under excessive torque
Corrosion in aggressive cleaning environments
Improper installation causing misalignment
Wear leading to increased clearance and vibration

FMEA Triads

Trigger: Insufficient shear strength for application torque
Failure: Pin shears, allowing seal rotation and rapid wear
Mitigation: Calculate required shear strength based on maximum torque; use hardened stainless steel with ≥400 MPa shear strength

Trigger: Corrosion from aggressive cleaning chemicals
Failure: Pin degradation leading to loss of anti-rotation function
Mitigation: Use AISI 316 stainless steel with proper passivation; implement regular inspection protocols

Trigger: Improper installation without proper alignment
Failure: Binding or excessive wear on pin and mating components
Mitigation: Use precision jigs for installation; follow torque specifications; verify alignment before final assembly

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

ISO 286 h6 tolerance for diameter; length tolerance ±0.1 mm

Test Method

Shear testing per ASTM F606; corrosion testing per ASTM A967; dimensional verification with coordinate measuring machine (CMM)

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

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Manufacturers of Anti-Rotation Pin

Manufacturer profiles associated with Anti-Rotation Pin.

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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

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Frequently Asked Questions

Why is stainless steel required for anti-rotation pins in meat processing?

Stainless steel provides corrosion resistance against cleaning chemicals, moisture, and food residues, preventing contamination and ensuring compliance with food safety regulations like FDA and EHEDG standards.

How does the anti-rotation pin prevent seal failure?

By preventing rotational movement between the seal and housing, it eliminates friction-induced wear, maintains proper seal compression, and prevents premature failure that could compromise vacuum performance.

Can standard DIN pins be used in food processing equipment?

Yes, but they must be made from food-grade stainless steel with appropriate surface finishes and comply with relevant food safety standards for direct or indirect food contact applications.

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.

Anti-Rotation Pin