Locking Lever: Lever Length 150-300 mm, Weight 0.5-2.5 kg

Component Specifications

Definition

The locking lever is a critical component in machine tool tailstocks, designed to apply clamping force through a cam, wedge, or screw mechanism to rigidly fix the tailstock body to the machine bed. It ensures precise alignment and prevents movement during drilling, reaming, or supporting operations, maintaining dimensional accuracy and operational safety.

Working Principle

Operates on mechanical advantage principles: manual force applied to the lever arm is converted into high clamping force through a cam or eccentric mechanism, creating friction between the tailstock base and machine bed. The over-center or self-locking design maintains position without continuous applied force.

Materials

Typically forged or machined medium-carbon steel (e.g., AISI 1045, C45) for strength and wear resistance. High-wear surfaces may be hardened to 45-50 HRC. Handles often use aluminum or plastic for ergonomics.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Weight	0.5-2.5 kg
Lever Length	150-300 mm
Mounting Type	Cam-action, Screw-type, or Quick-release
Clamping Force	2-8 kN
Operating Angle	90-120 degrees

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 230-1, DIN 55027

Parent Products

This component is used in the following industrial products

Tailstock

A movable support component on a CNC lathe that provides axial support to long workpieces during machining operations.

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Tensioning Devices

Mechanical components used to apply and maintain proper tension on tire protection chains

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Engineering Analysis

Risks & Mitigation

Insufficient clamping causing tailstock drift
Over-tightening damaging machine bed ways
Fatigue failure of lever components
Ergonomic injury from poor handle design

FMEA Triads

Trigger: Wear on cam surface reducing clamping force
Failure: Tailstock movement during machining
Mitigation: Regular inspection, surface hardening, and replacement of worn components

Trigger: Corrosion in pivot points
Failure: Stiff operation or seizure
Mitigation: Proper lubrication and use of corrosion-resistant materials

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm for mounting dimensions, ±2° for operating angle

Test Method

Clamping force measured with load cell, wear testing per ISO 6508, functional testing through 10,000 cycles

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.

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Manufacturers of Locking Lever

Manufacturer profiles associated with Locking Lever.

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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

What causes a locking lever to become loose during operation?

Common causes include wear on cam surfaces, improper adjustment, contamination with chips/coolant, or fatigue in spring components. Regular inspection and cleaning are recommended.

Can locking levers be retrofitted to older machines?

Yes, but compatibility depends on bed dimensions, mounting hole patterns, and required clamping force. Custom modifications may be needed for optimal performance.

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.

Locking Lever