YCM GT-300LMB
Image: ycmcnc.com, YCM
Key Specifications
Max Spindle
Spindle Power
Max Turn Length
max turning diameter
chuck size
spindle nose
How much does the YCM GT-300LMB cost?
Price estimate
We do not have a price for the YCM GT-300LMB 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
Long bed, big bore, live tools: the YCM GT-300LMB combines the three. Its maximum turning length is 1,233 mm (48.54 in) on a Z travel of 1,283 mm (50.51 in), the spindle has a ø105 mm (ø4.13 in) through hole, and the 12-station radial power turret drives tools at 3,000 rpm.
The length sets it apart inside the GT series, where the next longest machine, the GT-300MA, stops at 742 mm (29.21 in). Long shafts such as hydraulic cylinder rods, drive shafts, rolls and spindles are the obvious work, and milled keyways or drilled cross holes can be added without a second machine. Turning diameter is ø360 mm (ø14.17 in).
A long part needs support, and the tailstock quill row gives 1,155 mm of stroke with an MT-5 taper. YCM builds the tailstock on box ways that are part of the base casting, and offers a live quill as an option. For very slender shafts a steady rest would be the usual addition; the page does not list one, so ask.
The ø91 mm (ø3.58 in) draw bar hole lets long bar or tube pass through the headstock. The motor peaks at 18.5 kW in both ranges and the spindle runs to 3,000 rpm. Live tool torque is 3.57 kgf-m. Rapids are 20 m/min (787 ipm) in X and 24 m/min (945 ipm) in Z, which means a full Z traverse takes a few seconds. The machine weighs 7,850 kg (17,306 lb).
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | ø360 mm (ø14.17 in) |
| Max Turning Length | 1,233 mm (48.54 in) |
| Chuck Size | 12 |
| Spindle Nose | A2-8 |
| Spindle Bore | ø105 mm (ø4.13 in) |
| Hole Through Draw Bar | ø91 mm (ø3.58 in) |
| Max Spindle Speed | 3,000 rpm |
| X Axis Travel | 275 (180+95) mm |
| Z Axis Travel | 1,283 mm (50.51 in) |
| X Axis Rapid Traverse | 20 m/min (787 ipm) |
| X Axis Cutting Feed Rate | 1~10,000 mm/min (0.04~394 ipm) |
| Z Axis Rapid Traverse | 24 m/min (945 ipm) |
| Z Axis Cutting Feed Rate | 1~10,000 mm/min (0.04~394 ipm) |
| Spindle Motor Power | (L)11/18.5 (H)15/18.5 kW |
| Turret Type | Radial Power Turret (Servo Rotation, Hydraulic Clamping) |
| Turret Stations | 12 stations |
| Live Tool Speed | 3,000 rpm |
| Live Tool Torque | 3.57 kgf-m |
| Swing Over Turret | ø650 mm (ø25.59 in) |
| Tailstock Quill Taper | MT-5 |
| Tailstock Quill Stroke | 1,155 mm |
| Machine Weight | 7,850 kg (17,306 lb) |
Specifications sourced from ycmcnc.com — verified 2026-10-05
Strengths & Limitations
Strengths
- 1,233 mm (48.54 in) maximum turning length
- ø105 mm (ø4.13 in) spindle bore with a ø91 mm (ø3.58 in) draw bar hole
- 12-station radial power turret with live tools at 3,000 rpm
- Tailstock quill stroke of 1,155 mm on box ways
- 18.5 kW peak spindle motor
Limitations
- Spindle speed is limited to 3,000 rpm
- Live tool torque of 3.57 kgf-m is no higher than on the shorter GT machines
- No steady rest is mentioned on the page
- No Y axis for off-centre milling
Best For
Frequently Asked Questions
01
Maximum turning length is 1,233 mm (48.54 in) and Z travel is 1,283 mm (50.51 in). Maximum turning diameter is ø360 mm (ø14.17 in), and swing over the turret is ø650 mm (ø25.59 in).
02
Length and bore. The GT-300MA turns 742 mm (29.21 in) through a ø88 mm (ø3.46 in) spindle and weighs 6,950 kg (15,322 lb). The GT-300LMB turns 1,233 mm (48.54 in) through a ø105 mm (ø4.13 in) spindle and weighs 7,850 kg (17,306 lb).
03
Live tool motor speed is 3,000 rpm and torque is 3.57 kgf-m. The turret is a 12-station radial power turret with servo rotation and hydraulic clamping. X travel is 275 mm, printed as 180+95.
04
By a tailstock with an MT-5 quill and a quill stroke listed as 1,155 mm. YCM says the tailstock runs on hardened and ground box ways that are one piece with the base, and that a live quill is optional.