Reference Library › Turning Centers & Lathes › SR-20J

Reference recordMBB·TURNING-CENTERS-LATHES/STAR-SR-20JUpdated 2026-10-10

Photo: Star (manufacturer)

MakeStar

ModelSR-20J

Machine typeTurning Centers & Lathes

Max. Machining Diameterø20mm (25/32in)

Max. Headstock StrokeSTANDARD Type C 205mm (8in) Type N Bar diameterx2.5 WITH RMGB Type C 172mm…

ToolNUMBER OF TOOLS 6 tools TOOL SHANK 12mm

4-Spindle Sleeve HolderNUMBER OF TOOLS Front 4 tools Rear 4 tools Type N MAX. DRILLING CAPABILITY…

2-spindle front sleeve holderNUMBER OF TOOLS (sleeve) 2 tools MAX. DRILLING CAPABILITY ø8mm (5/16in) MAX.…

Power-Driven AttachmentNUMBER OF TOOLS Cross milling: 3 tools Cartridge type: at 2 position MAX.…

Rapid Feed Rate35m/min (X, Y, Z, XB, ZB)

Main Spindle Indexing AngleC-axis control

Main Spindle SpeedMax. 10,000 min⁻¹

Main Spindle Motor2.2kw (continuous) / 3.7kw (15min./60%ED)

Coolant Tank Capacity170ℓ

Dimensions (W x D x H)2,250 X 1,200 X 1,700mm

Weight2,200kg

Power Consumption5.2KVA

Maximum Chucking Diameterø20mm (25/32in)

Max. Length for Front Ejection80mm (3-5/32in)

📋 Spec data: Detailed (23 fields) · compiled from manufacturer and public sources · reference updated 2026-10-10.
These specifications describe the model in general. The year, control generation, spindle, and option package of a specific unit may differ — always verify against the actual machine. Methodology · Data sources.

Star

SR-20J

Evidence updated 15 October 2026: manuals and documents. How evidence is dated

MBB Model ID MBB-M-2D4Z84 · What is this?

Plan the installInstalled cost →

Machine weight (published)2,200 kg ≈ 4,850 lbFloor & foundation Rigging

From the published model specification. Spindle rating is not the machine’s total connected load; confirm the exact unit’s data plate and electrical drawings.

Manufacturer videoWatch on YouTube ↗

Star Micronics: SR-20J Type N Sliding Head Lathe DemonstrationStar Micronics GB · 6:15 · 2015-01-05

Star Micronics GB · 5:18 · 2012-10-16↗

About the Star SR-20J

The Star SR-20J is catalogued under Turning Centers & Lathes in The Machine Blue Book CNC machine reference library. This entry documents the machine for identification and education; specifications above are compiled from manufacturer and public sources and describe the model, not a specific unit.