Drake GS:TE445-4000
Key Specifications
Accuracy
Repeatability
length between centers
max part diameter
diamond dresser roll diameter
diamond dresser roll width
How much does the Drake GS:TE445-4000 cost?
Price estimate
We do not have a price for the Drake GS:TE445-4000 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:TE445-4000 is the largest external thread grinder Drake lists, with 4,000 mm (157.5 in) between centers and a maximum part diameter of 445 mm (17.5 in). It weighs 32,000 kg (70,547 lb). Everything else about the machine follows from those three figures.
The workhead is the visible change from the rest of the range. Its spindle nose is A2-15, where the GS:TE400-2000 has A2-8, which allows larger chucks and drive fixtures for heavy screws. Electrical demand is higher too, at 40-55 kVA. Drake's documents give two different workhead speeds for this model, so take that figure from the proposal.
The wheel head is unchanged from the smaller 4-axis machines. Drake lists 12 kW / 16 kW (16.1 hp / 21.5 hp) at 8,000 rpm, wheels of ≤400 mm (15.7 in) outside diameter, and a width of 10-25 mm (0.4-1.0 in); optional ≤60 mm (2.4 in). Dresser rolls are 115-152 mm (4.5-6.0 in) in diameter. Stock removal per pass is therefore similar to the smaller machines; what the buyer pays for in floor and foundation is travel.
Drake states <0.004 mm (<0.00016 in) over length of travel for linear positioning accuracy and <0.002 mm (<0.00008 in) for repeatability, and rapid return of up to 40 m/min (1,575 ipm). The footprint is 7.5 m W x 2.8 m D (295.3 in x 110.2 in), with the work held 1.5 m (59.1 in) above the floor. A part of this length needs a crane or a loader, and the centerline height should be checked against whatever handles it.
Full Specifications
| Parameter | Value |
|---|---|
| Length Between Centers | 4,000 mm (157.5 in) |
| Max Part Diameter | 445 mm (17.5 in) |
| Diamond Dresser Roll Diameter | 115-152 mm (4.5-6.0 in) |
| Diamond Dresser Roll Width | Up to 32 mm (1.3 in) |
| Wheel Spindle Power | 12 kW / 16 kW (16.1 hp / 21.5 hp) |
| Wheel Spindle Speed | 8,000 rpm |
| Wheel Surface Speed | Up to 120 m/sec |
| Wheel Size | ≤400 mm (15.7 in) |
| Wheel Width | 10-25 mm (0.4-1.0 in); optional ≤60 mm (2.4 in) |
| Wheel Bore | 160 mm (6.3 in) |
| Workhead Spindle Nose | A2-15 |
| Rapid Return Speed | Up to 40 m/min (1,575 ipm) |
| CNC Axes | 4 |
| Positioning Accuracy | <0.004 mm (<0.00016 in) over length of travel |
| Repeatability | <0.002 mm (<0.00008 in) |
| Power Requirement | 40-55 kVA |
| Power Requirements | 200-600 V |
| Machine Weight | 32,000 kg (70,547 lb) |
| Machine Dimensions | 7.5 m W x 2.8 m D (295.3 in x 110.2 in) |
| Workholding Height | 1.5 m (59.1 in) above the floor |
Specifications sourced from drakemfg.com — verified 2026-10-05
Strengths & Limitations
Strengths
- 4,000 mm (157.5 in) between centers, the longest in Drake's tables
- Maximum part diameter of 445 mm (17.5 in)
- A2-15 workhead spindle nose for heavy workholding
- Linear positioning accuracy of <0.004 mm (<0.00016 in) over length of travel stated over the length of travel
- Rapid return of up to 40 m/min (1,575 ipm) on linear motors
Limitations
- 32,000 kg (70,547 lb) and 7.5 m W x 2.8 m D (295.3 in x 110.2 in): foundation and rigging are a project of their own
- Electrical requirement of 40-55 kVA, above the 30-45 kVA of the GS:TE400-2000
- Workholding height of 1.5 m (59.1 in) above the floor means crane or loader access has to be planned
- Drake's documents disagree on workhead speed, so it has to be confirmed
Best For
Frequently Asked Questions
01
Drake lists 4,000 mm (157.5 in) between centers and a maximum part diameter of 445 mm (17.5 in). The workhead spindle nose is A2-15. Part weight capacity is not in the brochure table, so state the heaviest screw when asking for a proposal.
02
Approximate weight is 32,000 kg (70,547 lb). Overall dimensions are 7.5 m W x 2.8 m D (295.3 in x 110.2 in), and the workholding height is 1.5 m (59.1 in) above the floor. Allow room at the tailstock end for loading parts of the full length between centers.
03
Wheels are ≤400 mm (15.7 in) in outside diameter on a 160 mm (6.3 in) bore, 10-25 mm (0.4-1.0 in); optional ≤60 mm (2.4 in) wide. The wheel spindle row reads 12 kW / 16 kW (16.1 hp / 21.5 hp) at 8,000 rpm. Diamond dresser rolls are 115-152 mm (4.5-6.0 in) in diameter and up to 32 mm (1.3 in) wide.
04
Total electrical requirements are 40-55 kVA on a 200-600 V supply. That is more than the GS:TE400-2000, which is listed at 30-45 kVA.
05
Drake states linear positioning accuracy of <0.004 mm (<0.00016 in) over length of travel and linear positioning repeatability of <0.002 mm (<0.00008 in). Closed-loop precision feedback is listed as standard on its external thread grinders.
