Drake GS:TI240MH
Key Specifications
max internal grind length
max swing over table
diamond dresser roll diameter
diamond dresser roll width
workhead speed
workhead spindle nose
How much does the Drake GS:TI240MH cost?
Price estimate
We do not have a price for the Drake GS:TI240MH that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
The Drake GS:TI240MH is the internal thread grinder of Drake's MH pair: a manual helix machine with 3 CNC axes, 240 mm (9.4 in) of swing over the table and a maximum internal grind length of 190 mm (7.5 in). Internal thread grinding of this kind is mostly ball nut and thread gage work.
Drake's 4-axis internal grinders start with the GS:TI280, which has the same internal grind length, 280 mm (11.0 in) of swing and an A2-8 workhead nose. The MH machine has an A2-6 nose and one CNC axis fewer, since the helix is set manually.
Workhead speed is the figure that stands out. The handout lists up to 800 rpm continuous, against up to 300 rpm continuous on the GS:TI280. On small bores that helps keep work surface speed up. The wheel spindle power and speed are listed as various, so the quill and spindle are chosen for the bore being ground. The diamond dresser roll is 115 mm (4.5 in) in diameter and up to 32 mm (1.3 in) wide.
The feature list on the handout names PartSmart menu-driven screens, a CNC servo system, linear motors, a cast polymer base and diamond roll truing. Supply is 380-480 V at 30-45 kVA, and the machine occupies 1.9 m W x 2.6 m D (74.8 in x 102.4 in). No weight is given.
Full Specifications
| Parameter | Value |
|---|---|
| Max Internal Grind Length | 190 mm (7.5 in) |
| Max Swing Over Table | 240 mm (9.4 in) |
| Diamond Dresser Roll Diameter | 115 mm (4.5 in) |
| Diamond Dresser Roll Width | Up to 32 mm (1.3 in) |
| Workhead Speed | Up to 800 rpm continuous |
| Workhead Spindle Nose | A2-6 |
| Rapid Return Speed | Up to 40 m/min (1,575 ipm) |
| CNC Axes | 3 |
| Power Requirement | 30-45 kVA |
| Power Requirements | 380-480 V |
| Machine Dimensions | 1.9 m W x 2.6 m D (74.8 in x 102.4 in) |
Specifications sourced from drakemfg.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Workhead speed of up to 800 rpm continuous, against up to 300 rpm continuous on the GS:TI280
- Maximum internal grind length of 190 mm (7.5 in), the same as the 4-axis GS:TI machines
- Linear motors and a cast polymer base are on the feature list
- Rapid return of up to 40 m/min (1,575 ipm)
- Footprint of 1.9 m W x 2.6 m D (74.8 in x 102.4 in)
Limitations
- Manual helix with 3 CNC axes; the GS:TI280 has 4
- Listed for 380-480 V only, where the GS:TI280 is listed for 200-600 V
- Swing over the table is 240 mm (9.4 in), the smallest of the internal grinders
- Wheel spindle power and speed are listed as various, and no weight is given
Best For
Frequently Asked Questions
01
The handout gives a maximum internal grind length of 190 mm (7.5 in) and a maximum swing over the table of 240 mm (9.4 in). Bore diameter range is not stated; it follows from the wheel and quill Drake selects for the part.
02
Drake lists wheel spindle power and speed as various for this model, which means the spindle is specified per application. The dresser is a diamond roll 115 mm (4.5 in) in diameter and up to 32 mm (1.3 in) wide. Ask Drake for the spindle proposed for your bore size.
03
The GS:TI280 has 4 CNC axes, 280 mm (11.0 in) of swing, an A2-8 nose and a workhead speed of up to 300 rpm continuous. The GS:TI240MH has 3 CNC axes with a manual helix, an A2-6 nose and a workhead speed of up to 800 rpm continuous.
04
Total electrical requirements are 30-45 kVA at 380-480 V. Overall machine dimensions are 1.9 m W x 2.6 m D (74.8 in x 102.4 in). The handout notes that specifications are subject to change contingent on part requirements.
