Product image · configuration may vary
XT70-1 & XT70-2 Series Boring & Milling Power Head
Final specifications depend on the workpiece, tooling, cutting load, duty cycle, motor and machine interface.
XT70-1 & XT70-2 selection guide
The XT70 family includes the FB120 boring and milling spindle head, front-mounted (MF) and rear-mounted (MB) motor assemblies, and a separate SFA-2015 servo facing-head combination. Select the complete configuration from the workpiece, tooling, mounting envelope and control requirements.
XT70-FB120 spindle and motor references
| Catalog model | XT70-FB120 |
|---|---|
| Spindle interface | FB120: 120 mm positioning hole |
| Maximum spindle speed | 1,500 rpm |
| Bearing arrangement | Front NN3040K × 1 + 234440BM1 × 1; rear NN3036K × 1 |
| Lubrication | High-speed bearing grease |
| Catalog temperature rise | ≤20°C |
| Catalog roundness | ≤0.004 mm |
| Catalog maximum power | ≤50 HP |
| Spindle-head weight reference | 695 kg |
| MF / MB assembly weight reference | 1,080 kg |
| Motor power reference | Three-phase and servo spindle motors: 11–40 kW |
| Three-phase motor speed reference | 2-pole: 3,000 rpm; 4-pole: 1,500 rpm; 6-pole: 1,000 rpm |
| Servo motor speed reference | 1,500 rpm rated; 3,000 rpm maximum. Motor speed is not spindle output speed |
The catalog defines FB120 as a 120 mm positioning hole. Confirm tooling and the mounting drawing for the selected build. The motor table does not raise the ordinary spindle maximum above 1,500 rpm.
SFA-2015 servo facing combination
This combination uses a rotating facing head with servo-controlled radial tool movement for a stationary workpiece. Process suitability, interpolation and control integration require application review. Its values below apply to the facing combination.
| Assembly model | XT70-FB120-SMF + SFA-2015 |
|---|---|
| Facing head model | SFA-2015 |
| Interface | FB-120 |
| Maximum speed | 1,000 rpm |
| Bearing arrangement | Front NN3040K × 1 + 234440BM1 × 1; rear NN3036K × 1 |
| Lubrication | High-speed bearing grease |
| Catalog temperature rise | ≤20°C |
| Catalog roundness | ≤0.005 mm |
| Catalog maximum power | ≤40 HP |
| Maximum feed speed | 200 mm/min |
| Reducer ratio | 1:10 |
| Facing-head slider stroke | 140 mm |
| Ball screw | Φ25 × 5 |
| Feed servo motor power | 600 W |
| Facing-head repeat positioning | Catalog notation: ≤±0.015 mm; confirm the test method and acceptance conditions |
| Assembly weight reference | 1,330 kg |
Catalog drawings and parameter sheets
Chinese-edition source images for the spindle, motor arrangements and servo facing combination. Use the matching confirmed drawing for installation.
Information for configuration review
Provide the operation, workpiece material and dimensions, tool interface and diameter, target speed and cutting load, duty cycle, accuracy acceptance method, installation orientation and machine/control interfaces.
Catalog source and configuration limits
JNYO product catalog, PDF page 27; JNYO product catalog, PDF page 28; Chinese edition, approximately 74 MB.
Ordinary spindle values and SFA-2015 facing-combination values are separate specifications. The 600 W figure is the facing-feed servo motor, not the main spindle motor.
Weights describe pictured configurations. Catalog roundness is not a workpiece-accuracy guarantee. Confirm the complete assembly, dimensional drawing, measurement conditions and supply scope before integration.
Move from product review to machine integration.
Use the model as a starting point. The approved dimensional drawing and configuration record remain the final integration reference.
Confirm mounting faces, center height, spindle interface and machine envelope.
Send application brief → 023D libraryFind 3D model & CAD filesSearch the engineering-file library or request the model for the selected configuration.
Search files → 03Selection reviewCheck the application with JNYOShare the workpiece, tooling, speed, load, accuracy and motor preferences.
Request engineering review ↗Confirm the drawing before ordering.
Send the process, workpiece, tooling and machine interface for engineering review.