ANCA TG7+

$300,000 – $420,000 Updated 2026-03-17

Key Specifications

Axes

6 CNC axes (X, Y, Z, A, B, C) with B-axis spindle tilt

Thread Range (Metric)

M1 – M80

Thread Range (Inch)

No. 0 – 3 inch UNC/UNF/UNEF

Max Workpiece Diameter

80 mm

Max Workpiece Length

350 mm

Grinding Wheel Diameter

Up to 127 mm

Overview

The ANCA TG7+ is a dedicated CNC thread grinding machine engineered for the precision production of taps, thread mills, thread gauges, and other threaded tooling. Building on ANCA's proven platform architecture, the TG7+ incorporates a high-speed spindle tilting axis and specialized thread grinding software to achieve lead accuracies that meet or exceed ISO accuracy grades for precision threads.

Thread grinding demands extremely tight lead and flank angle accuracy, and the TG7+ addresses this through its combination of linear motor drives on primary axes, a precision C-axis workhead, and ANCA's dedicated thread grinding software module — part of the broader iGrind suite. The software handles single-rib and multi-rib wheel forms, automatic lead compensation, and thread root radius blending, dramatically reducing setup time compared to conventional thread grinders.

The TG7+ can grind threads from M1 to M80 (metric) and equivalent inch sizes, covering both external and internal thread forms. The spindle tilting axis (B-axis) allows the wheel to be set to the correct helix angle for each thread specification, ensuring proper thread flank contact geometry across all pitches. Wheel dress compensation and automatic measuring cycles are integrated into the control.

The machine is used by precision tap manufacturers, gauge makers, and cutting tool producers that need to produce threads to 4H/6H or better tolerances consistently across production batches. ANCA's strong service network and software update ecosystem make the TG7+ a long-term platform investment for specialized thread grinding operations.

Full Specifications

Parameter	Value
Axes	6 CNC axes (X, Y, Z, A, B, C) with B-axis spindle tilt
Thread Range (Metric)	M1 – M80
Thread Range (Inch)	No. 0 – 3 inch UNC/UNF/UNEF
Max Workpiece Diameter	80 mm
Max Workpiece Length	350 mm
Grinding Wheel Diameter	Up to 127 mm
Spindle Power	11 kW
Spindle Speed	Up to 10,000 RPM
B-Axis Tilt Range	±30°
Thread Lead Accuracy	ISO grade 4 achievable
Linear Axis Positioning Accuracy	±0.001 mm
Repeatability	±0.0005 mm
Control System	ANCA proprietary (Windows-based, 6-axis simultaneous)
Machine Weight	Approx. 3,500 kg
Coolant System	High-pressure coolant with paper-band filtration
Machine Operation	CNC
Grinder Type	Tool & Cutter
Cnc Model	ANCA System 32
Grinding Length	13.000"330.200mm
Grinding Width	6.000"152.400mm
Od Min Grinding Diameter	0.870"22.010mm
Od Max Grinding Diameter	6.000"152.400mm
Grinding Wheel	Grinding Wheel Diameter:5.900"150.000mmGrinding Wheel Diameter Opt:8.000"203.200mmGrinding Wheel Width:0.000"0.000mmGrinding Wheel Width Opt:8.000"203.200mmGrinding Wheel Bore:2.000"50.800mm
Grinding Wheel Diameter	5.900"150.000mm
Grinding Wheel Diameter Opt	8.000"203.200mm
Grinding Wheel Width	0.000"0.000mm
Grinding Wheel Width Opt	8.000"203.200mm
Grinding Wheel Bore	2.000"50.800mm
Wheel Head	Angle Adjustment:147.000°Motor:10.000hp7.500kWMotor Opt:15.000hp11.300kWRPM:6,675
Angle Adjustment	147.000°
Motor	10.000hp7.500kW
Motor Opt	15.000hp11.300kW
Rpm	6,675
Longitudinal	13.110"333.000mm
Cross	9.570"243.000mm
Vertical	8.190"208.000mm

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

Strengths & Limitations

Strengths

Dedicated thread grinding software within iGrind covers all common thread standards (metric, UNC, UNF, ACME, trapezoidal)
B-axis spindle tilt ensures correct helix angle contact across all thread pitches
Achieves ISO grade 4 thread accuracy consistently in production
Linear motor options on primary axes for superior lead consistency
Shares ANCA's common software platform — operators familiar with ANCA tool grinders can transfer skills

Limitations

Specialized application — not suitable for general tool grinding without reconfiguration
Thread grinding wheel dressing cycles add overhead time per batch
Higher cost than manual or semi-CNC thread grinders for lower-volume shops

Best For

Tap manufacturers producing precision metric and inch taps to tight tolerance grades Thread gauge makers requiring repeatable ISO grade 4 or better accuracy Cutting tool producers needing to grind thread mills and thread-form tools High-mix thread grinding operations benefiting from ANCA's software-driven setup flexibility

Frequently Asked Questions

01 What thread forms can the ANCA TG7+ grind?

The TG7+ handles all major thread forms including metric (ISO), UNC, UNF, UNEF, Whitworth, ACME, trapezoidal, and custom thread profiles. Both single-start and multi-start threads are supported. The iGrind thread module covers single-rib and multi-rib wheel grinding strategies.

02 Can the TG7+ grind both external and internal threads?

Yes. The TG7+ supports both external thread grinding (for taps, thread mills, bolts, and gauges) and internal thread grinding with appropriate wheel adapters. The B-axis tilt accommodates the different helix angles required for internal and external thread forms.

03 What thread accuracy grade is achievable on the TG7+?

Under controlled conditions with proper wheel dressing and thermal stability, the TG7+ can consistently achieve ISO thread accuracy grade 4 (4H/4g or better). For standard production taps, grade 6 is easily achievable at production rates.

04 How does the TG7+ compare to a conventional CNC thread grinder from a traditional grinding machine builder?

Traditional thread grinders from companies like Junker or Reishauer are purpose-built for high-volume single-form grinding. The ANCA TG7+ differentiates itself with superior software flexibility — it can change thread specifications in software without physical machine changes — making it better suited for high-mix production. For ultra-high-volume single-form work, dedicated thread grinders may offer faster cycle times.

05 Does the TG7+ use the same software as other ANCA machines?

Yes. The TG7+ runs ANCA's iGrind software with an added thread grinding module. This means operators familiar with ANCA's MX or FX machines can apply their software knowledge. The Windows-based CNC controller and ToolRoom library management are identical across the ANCA range.