Johnford ST-80CX
Image: johnford.com.tw, Johnford
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
swing over bed
swing over cross slide
chuck size
How much does the Johnford ST-80CX cost?
Price estimate
We do not have a price for the Johnford ST-80CX 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 Johnford ST-80CX gives the A2-15 spindle a metre of clearance over the cross slide. It swings 1,200 mm (47.2 in) over the bed and 1,000 mm (39.4 in) over the carriage, with 2,000 mm (78.7 in) of Z travel and 520 mm (20.5 in) of X.
Its turn-mill relative shows what the frame can carry. The ST-80CX+B+C+Y uses the same Ø1,200 mm swing and 2,000 mm between centers with a Ø610 mm (24 in) chuck, and is listed at 45,000 kg (99,206 lb) with its B-axis spindle and 80-tool magazine. The turret lathe here weighs 15,500 kg (34,100 lb).
As a lathe, the ST-80CX is aimed at large castings and forgings that are short for their diameter: valve and pump bodies, bearing housings, large hubs. The 510 mm (20.1 in) chuck, or the optional 610 mm (24 in) one, holds them, and 30 / 37 kW (40.2 / 49.6 hp) through four automatic speeds cuts them. A 37 / 45 kW (49.6 / 60.3 hp) motor and a geared headstock at 1,200 rpm are the heavier alternatives.
Standard speed is 1,500 rpm. The tailstock travels 1,700 mm (66.9 in) with an MT#7 quill of Ø200 mm (7.9 in). Dimensions are 7,412 x 2,715 x 3,200 mm (291.8 x 106.9 x 126 in).
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | 1,200 mm (47.2 in) |
| Swing Over Cross Slide | 1,000 mm (39.4 in) |
| Chuck Size | 510 mm (20.1 in) |
| Chuck Size Optional | 610 mm (24 in) |
| Bar Capacity | 139 mm (5.5 in) |
| Spindle Nose | A2-15 |
| Spindle Bore | 152 mm (6 in) |
| Spindle Transmission | Auto 4 speeds |
| Max Spindle Speed | 1,500 rpm (Std.); 1,400 rpm (Opt.) |
| Spindle Speed Geared Headstock | 1,200 rpm |
| Spindle Motor Power | 30 / 37 kW (40.2 / 49.6 hp) (Std.); 37 / 45 kW (49.6 / 60.3 hp) (Opt.) |
| Spindle Bearing Diameter | 200 mm (7.9 in) |
| Turret Stations | 12 |
| X Axis Travel | 520 mm (20.5 in) |
| Y Axis Travel Optional | ±75 mm (±3 in) |
| Z Axis Travel | 2,000 mm (78.7 in) |
| Rapid Traverse Rate | X: 10 m/min (394 ipm); Y: 10 m/min (394 ipm); Z: 12 m/min (472 ipm) |
| Tailstock Travel | 1,700 mm (66.9 in) |
| Tailstock Quill Travel | 150 mm (5.9 in) |
| Tailstock Quill Diameter | Ø200 mm (Ø7.9 in) |
| Tailstock Taper | MT#7 |
| Servo Motor X | 7 kW |
| Servo Motor Y Optional | 3 kW |
| Servo Motor Z | 7 kW |
| Bed Inclination | 60° |
| Machine Weight | 15,500 kg (34,100 lb) |
| Machine Dimensions | 7,412 x 2,715 x 3,200 mm (291.8 x 106.9 x 126 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 1,000 mm (39.4 in) swing over the cross slide with a 510 mm (20.1 in) chuck
- 520 mm (20.5 in) of X travel
- 30 / 37 kW (40.2 / 49.6 hp), optionally 37 / 45 kW (49.6 / 60.3 hp)
- Geared headstock listed at 1,200 rpm
- Ø200 mm (7.9 in) MT#7 tailstock quill
Limitations
- Spindle speed of 1,500 rpm at most
- 15,500 kg (34,100 lb) under parts of up to a metre in diameter
- 3,200 mm (126 in) of machine height
- Largest listed chuck is 610 mm (24 in)
Best For
Frequently Asked Questions
01
The ST-80CX is the turret lathe at 15,500 kg (34,100 lb). The ST-80CX+B+C+Y is the turn-mill machine on the same swing and length, with a CAPTO C8 B-axis spindle and 80 tools, listed at 45,000 kg (99,206 lb).
02
510 mm (20.1 in) as standard and 610 mm (24 in) as the option, on an A2-15 nose. Swing is 1,200 mm (47.2 in) over the bed and 1,000 mm (39.4 in) over the cross slide.
03
520 mm (20.5 in) on X and 2,000 mm (78.7 in) on Z, at 10 m/min and 12 m/min. Tailstock travel is 1,700 mm (66.9 in).
04
The ST-80CH swings 1,000 mm (39.4 in) over the bed and 800 mm (31.5 in) over the cross slide with 420 mm (16.5 in) of X travel, at 15,400 kg (33,880 lb). The ST-80CX swings 1,200 mm (47.2 in) and 1,000 mm (39.4 in) with 520 mm (20.5 in) of X.
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