Ganesh GEN TURN SL-20Y2
Image: expandmachinery.com, Ganesh
Key Specifications
Max Spindle
Rapid Traverse
Spindle Power
Max Turn Length
bar capacity
collet style
How much does the Ganesh GEN TURN SL-20Y2 cost?
Price estimate
We do not have a price for the Ganesh GEN TURN SL-20Y2 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 GEN TURN SL-20Y2 is the small member of Expand Machinery's hybrid Swiss line: a 20 mm sliding-headstock machine whose rotary guide bushing can be removed, so the same machine runs long slender parts with the bushing and short parts without it. The main spindle turns at 10,000 rpm and the sub-spindle at 8,000 rpm, each on a motor rated 5 HP for 15 min and 3 HP on constant duty.
The choice between the two modes is a matter of turning length. With the synchronous rotary bushing the machine turns 7.48 in (190 mm) in a single stroke. With the bushing removed that drops to 2.36 in (60 mm), but the bar no longer has to be ground and the remnant is shorter. The bushing is a TD25S type and accepts 20 mm round, 16 mm hex or 12 mm square stock. Collets are listed as Hardinge TF-25S, Southwick & Meister TS-25 or Star SR-20.
Eight axes are listed, with a Y axis and a C axis on each side. The main tool post holds 6 turning tools of 12 mm shank, 4 internal tools and 2 deep hole drill positions in 22 mm sleeves, plus 5 ER-16 cross live tools at 8,000 rpm and 1.6 HP (1.2 kW). The sub-spindle block has 3 turning tools, 4 internal tools and 3 ER-16 axial live tools at 4,000 rpm, and can take 8 tools. Expand Machinery counts 30 tools with 8 driven as standard. Drilling capacity on center is 10 mm, with tapping to M8.
It runs on cutting oil only, from a 58 gallon (220 L) tank, and the maker fits a cutting oil chiller for thermal stability. Control is a Mitsubishi M-830. The machine weighs 5,954 lb (2,700 kg). The larger GEN TURN SL-42Y2 takes bar to 1-5/8 in (42 mm) on a 6,000 rpm spindle.
Full Specifications
| Parameter | Value |
|---|---|
| Bar Capacity | 20 mm (0.8 in) |
| Max Spindle Speed | 10,000 rpm |
| Spindle Motor Power | 5 HP 15 min duty rated (3 HP constant duty rated); 2.2 / 3.7 kW |
| Collet Style | Hardinge TF-25S / Southwick & Meister TS-25 / Star SR-20 |
| Collet Actuation | Pneumatic piston-driven toggle clamp, feed-finger style |
| Guide Bushing | Synchronous rotary guide bushing TD25S (20 mm round, 16 mm hex, 12 mm square) |
| Max Turning Length | 7.48 in (190 mm) with rotary bushing; 2.36 in (60 mm) without bushing |
| Main Spindle Stroke | 9.840 in (250 mm) single stroke |
| Max Distance Between Spindles | 23.6 in (600 mm) |
| Spindle Centerline Height | 42 in (1,060 mm) |
| OD Turning Tools | 6 square shank turning tool holders, 12 mm (S1) |
| ID Tool Holders | 4 round tool sleeve bores, 22 mm shank (S1) |
| Deep Hole Drill Positions | 2 round tool sleeve bores, 22 mm shank (S1) |
| Cross Slide Live Tools | 5 ER-16 cross slide live tools, 8,000 rpm, 1.6 HP (1.2 kW) (S1) |
| Front Slide Live Tools | 3 ER-16 front slide live tools, optional in lieu of 1 cross tool (S1) |
| Drilling Tapping Capacity | 10 mm drilling / M8 tap (main spindle and sub spindle) |
| Cross Drilling Tapping Capacity | 8 mm drilling / M6 tap (driven cross tools) |
| Sub Spindle Speed | 8,000 rpm |
| Sub Spindle Power | 5 HP 15 min duty rated (3 HP constant duty rated); 2.2 / 3.7 kW |
| Sub Spindle OD Tools | 3 square shank turning tool holders, 10 mm (S2) |
| Sub Spindle ID Tools | 4 round tool sleeve bores, 22 mm shank (S2) |
| Sub Spindle Live Tools | 3 ER-16 axial live tools, 4,000 rpm, 1 HP (0.75 kW) (S2, 8 possible) |
| Backworking Length | 6.1 in maximum turning length / 3.14 in maximum boring length |
| Front Ejection Length | 110 mm maximum part length for front ejection from sub spindle |
| Rapid Traverse Rate | 944 ipm (24 m/min) X1, Y1, Z1, X2, Y2, Z2 |
| Axis Motor Power | X1, Y1, Z1 1 HP (0.75 kW); X2, Y2, Z2 0.67 HP (0.5 kW) |
| Machine Weight | 5,954 lb (2,700 kg) |
| Coolant Tank Capacity | 58 gallons (220 L), cutting oil only |
| Power Requirement | 220 VAC ±5%, 53 amps, 20 kVA, 3-phase, 60 Hz |
| Air Requirement | 85 psi at 6 cfm |
| CNC Control | Mitsubishi M-830 |
Specifications sourced from expandmachinery.com — verified 2026-10-04
Strengths & Limitations
Strengths
- Runs with or without the synchronous rotary guide bushing: 7.48 in (190 mm) of turning length with it, 2.36 in (60 mm) without
- 10,000 rpm main spindle and 8,000 rpm sub-spindle
- Y axis and C axis on both the main and the sub-spindle side
- 5 ER-16 cross live tools at 8,000 rpm and 1.6 HP (1.2 kW)
- Cutting oil chiller fitted for thermal stability
Limitations
- Bar capacity stops at 20 mm (0.8 in)
- Sub-spindle axial live tools are limited to 4,000 rpm and 1 HP (0.75 kW)
- Cutting oil only: the 58 gallon (220 L) tank is not for water-based coolant
- Front slide axial live tools are optional and replace 1 cross tool
Best For
Frequently Asked Questions
01
The rotary synchronous guide bushing is removable. With it, the machine works as a conventional Swiss type and turns up to 7.48 in (190 mm) in one stroke. Without it, the bar is held only by the main collet, maximum turning length is 2.36 in (60 mm), and the machine no longer needs ground bar stock.
02
Main and sub-spindle collets are listed as Hardinge TF-25S, Southwick & Meister TS-25 or Star SR-20, closed by a pneumatic toggle clamp. The synchronous rotary guide bushing is a TD25S, available for 20 mm round, 16 mm hex and 12 mm square bar.
03
Maximum distance between spindles is 23.6 in (600 mm). Back working allows a maximum turning length of 6.1 in and a maximum boring length of 3.14 in. Parts up to 110 mm long can be ejected from the front of the sub-spindle.
04
All six linear axes rapid at 944 ipm (24 m/min). Electrical supply is 220 VAC ±5%, 3-phase, 60 Hz at 53 amps, 20 kVA, and air is 85 psi at 6 cfm. The machine weighs 5,954 lb (2,700 kg).
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