Gleason 300GMS Gear Metrology System

$200,000 - $350,000 Updated 2026-03-16

Key Specifications

Max Gear Diameter

300 mm

Max Module

Gear Types

Spur, helical, worms, bevel, splines

Measurement Axes

4 (X, Y, Z + C rotary)

Probe System

Touch-trigger ruby probe

Linear Accuracy

±0.3 µm

Overview

The Gleason 300GMS is a CNC gear measuring machine (gear metrology system) designed for complete inspection of spur gears, helical gears, worms, and bevel gears up to 300mm pitch diameter. Unlike cutting machines, the 300GMS is a precision measurement instrument that verifies gear geometry to DIN, AGMA, and ISO standards — measuring involute profile, lead (helix), pitch, runout, and surface finish in a single automated inspection cycle. The four-axis CNC measuring system uses a precision ruby probe to trace the gear tooth flanks with sub-micron repeatability. Results are output in AGMA/DIN chart format compatible with quality management systems. The 300GMS integrates with Gleason's production gear cutting machines (Genesis and Phoenix series) for closed-loop process control — the metrology system sends correction values back to the cutting machine to maintain gear quality within tolerance automatically. Used in automotive, aerospace, and wind energy gear production.

Full Specifications

Parameter	Value
Max Gear Diameter	300 mm
Max Module	15
Gear Types	Spur, helical, worms, bevel, splines
Measurement Axes	4 (X, Y, Z + C rotary)
Probe System	Touch-trigger ruby probe
Linear Accuracy	±0.3 µm
Rotary Accuracy	±0.5 arc-second
Measurement Time (Typical)	3-8 min per gear
Control	Gleason GAMA CNC
Standards	AGMA, DIN, ISO gear measurement

Specifications sourced from gleason.com — verified 2026-03-28

Strengths & Limitations

Strengths

Complete gear inspection in single automated cycle
Closed-loop integration with Gleason cutting machines for automatic correction
Handles spur, helical, worms, bevel, and splines
AGMA/DIN chart output for quality documentation
Sub-micron linear accuracy for aerospace-grade gear inspection

Limitations

Measurement only — not a production cutting machine
300mm diameter limit (larger gears need 500GMS or 1200GMS model)
High cost for a dedicated inspection instrument

Best For

Automotive transmission, wind turbine gearbox, and aerospace accessory drive gear manufacturers requiring traceable gear quality documentation and closed-loop process control.

Frequently Asked Questions

01 What gear parameters does the 300GMS measure?

The 300GMS measures: involute profile (tooth form), lead/helix angle, pitch and pitch error, total cumulative pitch error, runout (eccentricity), tooth thickness, and surface roughness. Results are presented in standard AGMA or DIN gear quality charts.

02 How does closed-loop integration with Gleason cutting machines work?

After measuring a gear on the 300GMS, the GAMA control can automatically compute correction values for profile, lead, and pitch errors and send those corrections directly to the Genesis or Phoenix hobbing or grinding machine. The next batch is cut with corrected parameters without manual adjustment by the operator.