NOMURA NN-20J3-XB CNC Swiss Lathe, New in 2024

General Specifications:
NN-20J3XB — CNC Swiss-Type Automatic Lathe
The NN-20J3XB builds on the proven 20J3 platform with B-axis flexibility for multi-angle drilling and milling in a single setup. Type A adds a programmable B-axis on the main spindle, while Type C expands capability further with a B-axis on both the main and sub spindles — ideal for higher-complexity parts and greater done-in-one throughput.
Tool Layout — Feed Distances
Feed / Unit Z1 X1 Y1 Z2 X2 Y2
Feed Distance (mm / in) 205 (8.07) 308 (12.13) 165.5 (6.52) 350 (13.78) 181.5 / TA: 225 (7.15 / 8.86) 236 / TA: 232 (9.29 / 9.13)
Rapid Feed Rate (m/min) 30 30 30 30 30 30
Tool Counts by Type
Tools Unit Type A Type B Type C Remarks
Max. Number of Tools EA 29 28 27
Main — O.D. Tool EA 5 6 5 ⌀12.7
Main — I.D. Front Tool EA 4 (all types) 4 (all types) 4 (all types) ER16
Main — Cross Drill EA 5 (B1 Axis) 5 5 (B1 Axis) ER16
Sub — O.D. Tool EA — 2 — ⌀12.7
Sub — I.D. Tool EA — 3 — ER16
Sub — Eccentric Tool EA 3 – – ER11
Sub — Cross Drill EA 3 4 (B2 Axis) 4 (B2 Axis) ER16
Specifications (Revision V2026.07.27)
Machining Capacity
• Max. Machining Diameter: ⌀20mm
• Max. Machining Length: 200mm / 1 Chuck
• Max. Parts Unloading Length: 93mm
• Main Spindle Through-Hole Diameter: ⌀23mm
Spindle
• Spindle RPM (Main/Sub): 10,000 RPM
• Sub Spindle Chucking Diameter: ⌀20mm
Tool (by Type)
Item Type A Type B Type C
Max. Number of Tools 29 28 27
Max. Machining Drill — ⌀10mm —
Max. Machining Tap — M8 —
Main O.D. Tool 5 (⌀12.7 x 150mm) 6 (⌀12.7 x 150mm) 5 (⌀12.7 x 150mm)
Main I.D. Tool 4 (ER16) (OP: Rear 4) 4 (ER16) (OP: Rear 4) 4 (ER16) (OP: Rear 4)
Main Cross Drill 5 (ER16)(B1 Axis) 5 (ER16) 5 (ER16)(B1 Axis)
Cross Drill RPM (Main) 6,000 RPM 6,000 RPM 6,000 RPM
Sub O.D. Tool 2 (⌀12.7 x 150mm max) 2 (⌀12.7 x 150mm max) 2 (⌀12.7 x 150mm max)
Sub I.D. Fixed Tool 3 (ER16) 3 (ER16) 3 (ER16)
Sub I.D. Rotary Tool 3 (ER11) — –
Sub Cross Drill 3 (ER16) 4 (ER16)(B2 Axis) 4 (ER16)(B2 Axis)
Cross Drill RPM (Sub) 6,000 RPM 6,000 RPM 6,000 RPM
Rapid Feed Rate X1,Y1,X2,Y2: 28 m/min; Z1,Z2: 30 m/min X1,Y1,X2,Y2: 28 m/min; Z1,Z2: 30 m/min X1,Y1,X2,Y2: 28 m/min; Z1,Z2: 30 m/min
Feed
• Min. Command Unit: 0.0001 mm
• C-Axis Min. Command Unit (Main/Sub): 0.00001°
Motor
• Main Spindle Motor: 3.7 / 1.5 kW
• Cross Drill Motor: 1.5 / 0.55 kW (Mitsubishi)
• Sub Spindle Motor: 3.7 / 1.5 kW
• Sub Rotary Motor: 1.5 / 0.55 kW (Mitsubishi)
• Coolant Pump (Main/Sub): 0.25 kW x 2
• Lubricant Pump: 0.015 kW
Dimensions & Other
• Main Spindle Center Height: 1,010 mm
• Input Power Capacity: 17 KVA
• Air Pressure / Flow Rate: 0.6 MPa, 35 L/min
• Coolant Tank: 160 L
• W x D x H: 2,411 x 1,478 x 2,005 mm
• Weight (Standard Accessories Included): 2,800 kg
NC
• NC Unit: M80V (Mitsubishi)
• NC Display: 10.4" Color TFT LCD
• Memory Capacity: 500KB (Mitsubishi)
• No. of Tool Offset: 256 Sets (Mitsubishi)
Standard Accessories
• MVT (Micro Vibration Turning)
• Parts Conveyor
• Spindle Cooling Unit
• Auto Lubrication Unit
• Tool Holders
• Rotary Guide Bush
• Drill Holder
• Automatic Power Turn-Off Device
• Automatic Oiling Device
• Coolant Pump (Main/Sub)
• Coolant Flow Detector (Main/Sub)
• Door Interlock Switch
• Working Light (LED)
• Parts Catcher
• Three-Color Signal Light
• Manual Pulse Generator (MPG)
• Cross Drill Unit
• Coolant Unit
• Cut-Off Detector