Johnford SL-50-2S
Key Specifications
Max Spindle
Spindle Power
swing over bed
swing over cross slide
chuck size
bar capacity
How much does the Johnford SL-50-2S cost?
Price estimate
We do not have a price for the Johnford SL-50-2S 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
On the Johnford SL-50-2S a sub-spindle with an 8 in chuck takes the place of the tailstock, opposite a 10 in main chuck. Z travel is 500 mm (19.7 in) and the bed swings Ø580 mm (Ø22.8 in).
A detail separates it from the single-spindle SL-50. That model has a 2 step automatic gearbox; the SL-50-2S lists a one step transmission for its 15 / 18.5 kW (20.1 / 24.8 hp) main motor, at the same 3,500 rpm. The twin-spindle version is laid out for cycle time on medium parts, not for heavy low-speed roughing.
The sub-spindle is a full working spindle. It has 11 / 15 kW (14.8 / 20.1 hp), an A2-6 nose with a Ø66 mm (Ø2.6 in) bore and runs to 4,500 rpm, so second-side turning is not restricted to light finishing.
From this size up, the table carries Y-axis data: ±40 mm (±1.6 in) of travel and a 3.7 / 5.5 kW (5.0 / 7.4 hp) power turret motor. Fitting the Y-axis reduces the swing over the cross slide from Ø450 mm (Ø17.7 in) to Ø380 mm (Ø15 in). With the optional C+Y axis and live tool turret, a part can be turned, milled and drilled on both sides and dropped complete.
The machine is 4,400 mm (173.2 in) long and weighs 6,500 kg (14,300 lb). Rapids are 15 / 10 / 18 / 18 m/min (591 / 394 / 709 / 709 ipm) on X1, Y, Z1 and Z2. For longer parts there is the SL-60-2S with 900 mm (35.4 in) of Z.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Bed | Ø580 mm (Ø22.8 in) |
| Swing Over Cross Slide | Ø450 mm (Ø17.7 in) / Ø380 mm (Ø15 in) (Y-axis) |
| Chuck Size | 10 in (254 mm) |
| Bar Capacity | Ø76.5 mm (Ø3.1 in) |
| Spindle Nose | A2-8 |
| Spindle Bore | Ø86 mm (Ø3.4 in) |
| Spindle Transmission | One step |
| Max Spindle Speed | 3,500 rpm |
| Spindle Motor Power | 15 / 18.5 kW (20.1 / 24.8 hp) |
| Spindle Bearing Diameter | Ø130 mm (Ø5.1 in) |
| Sub Spindle Chuck Size | 8 in (203 mm) |
| Sub Spindle Bar Capacity | Ø51 mm (Ø2 in) |
| Sub Spindle Nose | A2-6 |
| Sub Spindle Bore | Ø66 mm (Ø2.6 in) |
| Sub Spindle Transmission | one step |
| Sub Spindle Speed | 4,500 rpm |
| Sub Spindle Power | 11 / 15 kW (14.8 / 20.1 hp) |
| Sub Spindle Bearing Diameter | Ø100 mm (Ø3.9 in) |
| Turret Stations | 12 |
| X Axis Travel | 250 mm (9.8 in) |
| Y Axis Travel | ±40 mm (±1.6 in) |
| Z Axis Travel | 500 mm (19.7 in) |
| Rapid Traverse X1 Y Z1 Z2 | 15 / 10 / 18 / 18 m/min (591 / 394 / 709 / 709 ipm) |
| Servo Motor X | 3 kW; 4 kW with Y-axis |
| Servo Motor Y | 1.6 kW |
| Servo Motor Z1 Z2 | 4 kW |
| Power Turret Motor | 3.7 / 5.5 kW (5.0 / 7.4 hp) |
| Bed Inclination | 45° |
| Machine Weight | 6,500 kg (14,300 lb) |
| Machine Width Height | 2,100 x 2,120 mm (82.7 x 83.5 in) |
| Machine Length | 4,400 mm (173.2 in) |
Specifications sourced from johnford.com.tw — verified 2026-10-04
Strengths & Limitations
Strengths
- 10 in main chuck and 8 in sub-spindle chuck
- Sub-spindle with 11 / 15 kW (14.8 / 20.1 hp) and 4,500 rpm
- Y-axis version with ±40 mm (±1.6 in) of travel
- Ø76.5 mm (Ø3.1 in) bar capacity on the main spindle
- 6,500 kg (14,300 lb) on a 45° bed
Limitations
- One step main transmission, where the single-spindle SL-50 has 2 step Auto
- Swing over cross slide drops to Ø380 mm (Ø15 in) with the Y-axis
- Z travel of 500 mm (19.7 in)
- Y-axis and live tool turret are options
Best For
Frequently Asked Questions
01
An 8 in chuck on an A2-6 nose, Ø51 mm (Ø2 in) bar capacity, a Ø66 mm (Ø2.6 in) bore, 11 / 15 kW (14.8 / 20.1 hp) and 4,500 rpm with a one step transmission.
02
The SL-50A-2S has a 12 in main chuck, Ø91 mm (Ø3.6 in) bar capacity and a 22 / 26 kW (29.5 / 34.9 hp) main motor with a 2 step Auto transmission. The SL-50-2S has a 10 in chuck and 15 / 18.5 kW (20.1 / 24.8 hp) with one step. Both weigh 6,500 kg (14,300 lb).
03
The table gives a swing over the cross slide of Ø450 mm (Ø17.7 in) for the standard machine and Ø380 mm (Ø15 in) for the Y-axis version. Y travel is ±40 mm (±1.6 in).
04
Rapid traverse is 15 / 10 / 18 / 18 m/min (591 / 394 / 709 / 709 ipm) for X1, Y, Z1 and Z2. X travel is 250 mm (9.8 in) and Z travel 500 mm (19.7 in).
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