Precision Keyway Plug Gauge China Suppliers and Factory Manufacturer

Looking for high-precision keyway plug gauges from leading China suppliers? Our factory produces professional measuring tools for keyway dimensional accuracy, featuring durable alloy steel and strict metrological standards for industrial quality control.

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Detailed Parameters

Size Range A	Φ3 - Φ20 mm	Size Range B	Φ21 - Φ30 mm
Size Range C	Φ31 - Φ50 mm	Size Range D	Φ51 - Φ75 mm
Size Range E	Φ76 - Φ90 mm	Taper Standard	Morse Taper (MT)
Taper Ratio	7:24 Taper Shank	Taper Range	No. 1 - No. 6
Tool Type	Inspection Rods	Gauge Application	Cylindrical & Tapered

Key Advantages

High Wear Resistance

Manufactured from premium alloy steels to prevent surface deformation and ensure long-term dimensional accuracy.

Rapid Inspection

Enables instant "Go/No-Go" verification on the production line, significantly accelerating QC workflows.

Precision Calibration

Strict adherence to international metrological standards for maximum reliability in metal fastener manufacturing.

Versatile Range

Comprehensive sizing from Φ3 to Φ90mm and Morse Taper No.1-6 to cover various industrial needs.

Easy Verification

Clear marking and ergonomic design for effortless identification and handling by operators.

Industrial Durability

Designed to withstand the harsh conditions of welding workbenches and heavy machinery shops.

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Management Platforms

Cleaning Protocol

Ensure gauges are cleaned immediately after use to remove adherents and metallic debris.

Handling Care

Hold gauges lightly during use to prevent accidental bumps or damage to the measuring surface.

Prohibited Usage

Strictly prohibited to use as a cutting tool or to force screwing into threads.

Access Control

Usage is restricted to qualified metrological staff to maintain tool integrity.

Storage Standard

Store in dedicated protective cases to avoid surface oxidation and mechanical wear.

Periodic Audit

Regular calibration checks recommended to ensure compliance with precision norms.

Investment Return Comparison

Metric	Standard Tooling	Professional Plug Gauges
Inspection Speed	Slow/Manual	Ultra-Fast / Direct
Accuracy Rate	Variable	High Precision (Norm-based)
Tool Lifespan	Short (Soft Steel)	Long (Hardened Alloy)
Error Margin	Moderate	Minimal / Tight Tolerance
Labor Cost	High Per Unit	Low (Rapid Verification)

Frequently Asked Questions

Q: How should I maintain the measuring surface of a plug gauge?

The measuring surface must be cleaned immediately after use to remove any adherents. Avoid using abrasive materials; instead, use a lint-free cloth and appropriate gauge cleaning solvent.

Q: Can these gauges be used as threading tools?

No. It is strictly prohibited to use a plug gauge as a cutting tool. Forcing the gauge into a thread or using it for extrusion will permanently damage the precision surface.

Q: What is the standard for the Morse Taper Shank rods?

Our Morse Taper Shank inspection rods follow the 7:24 taper ratio and are available in standard sizes from No. 1 to No. 6 for universal industrial compatibility.

Q: Who is authorized to use these precision measuring tools?

To prevent damage and ensure measurement accuracy, these tools should only be operated by trained metrological staff or qualified quality control technicians.

Q: What size ranges are available for cylindrical inspection rods?

We offer a comprehensive range divided into five main categories: Φ3-Φ20, Φ21-Φ30, Φ31-Φ50, Φ51-Φ75, and Φ76-Φ90 mm.

Q: How do I prevent damage during on-site usage?

Handle the gauge lightly and avoid dropping it or bumping it against hard surfaces. Always return the gauge to its protective case when not in active use.

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