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Engineering components for special-purpose machines

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XT50-2 BT50 ATC Spindle Head Product image · configuration may vary
XT50-2 XT50-2 Series

XT50-2 BT50 ATC Spindle Head

XT50-2-BT50-MB is an automatic tool-change spindle head for concentrated machining cycles that require a compatible tool magazine and control sequence. Final selection follows the workpiece, tooling, cutting load, duty cycle and machine interface.

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  • Spindle interfaceBT50
  • Published speed1,500 / 3,000 rpm; 4,500 rpm NSK option
  • Published roundness≤ 0.004 mm
  • Assembly reference200 kg

Send the operation, workpiece, tooling, target speed, load, duty cycle and machine interface drawing for configuration review.

Drawing-led configurationApplication reviewGlobal project support

Final specifications depend on the workpiece, tooling, cutting load, duty cycle, motor and machine interface.

XT50-2-BT50-MB selection guide

XT50-2 BT50 ATC Spindle Head for machine builders and production-equipment integrators.

XT50-2-BT50-MB is an automatic tool-change spindle head for concentrated machining cycles that require a compatible tool magazine and control sequence. Final selection follows the workpiece, tooling, cutting load, duty cycle and machine interface.

BT50Spindle interface
1,500 / 3,000 rpm; 4,500 rpm NSK optionPublished speed
≤ 0.004 mmPublished roundness
200 kgAssembly reference

Application fit

Start with the workpiece and process. The model name is only a starting point.

01

Special-purpose machines

Dedicated boring, milling or combined stations designed around a defined part and cycle time.

02

Modular machining units

Integrate the spindle with a slide, column, fixture and CNC or special-purpose control.

03

Production cells

Concentrate compatible operations after tooling, load, guarding and service access are reviewed.

04

Retrofit projects

Compare center height, mounting, machine envelope and maintenance access with the existing machine.

Published selection data

Model platform XT50-2-BT50-MB
Spindle interface BT50
Published speed 1,500 / 3,000 rpm; 4,500 rpm NSK option
Bearing arrangement 1,500 rpm configuration: NN3018K / 234418BM1 and NN3016K. 3,000 / 4,500 rpm configurations: 7216AC/TBT and 7214AC/DB; the 4,500 rpm option specifies NSK bearings
Lubrication High-speed bearing grease
Published temperature rise ≤ 20°C
Published roundness ≤ 0.004 mm; confirm measurement and acceptance conditions
Published maximum power ≤ 20 HP
Tool change Automatic tool change with booster-type unclamping; magazine and control sequence are machine dependent
Motor reference 5.5–15 kW; servo reference 1,500 rpm rated / 4,500 rpm maximum
Published assembly weight 200 kg
Coolant path External coolant; compare the CTS variant when deep-hole cooling is required
Engineering file Request the matching dimensional drawing and compatible 3D file before integration

Published values are selection references taken from the existing JNYO product sheets. Confirm the exact build, dimensions, motor, speed, load, acceptance method and supply scope in the approved drawing and quotation.

Compare configurations

Choose the physical layout, tool interface, ATC and coolant requirements before fixing motor and control specifications.

PlatformCore spindle headCompare the interface, load, machine envelope and process requirements before selection.Front-mountedMotor toward the frontCompare the interface, load, machine envelope and process requirements before selection.Current pageAutomatic tool changeCompare the interface, load, machine envelope and process requirements before selection.

Five inputs for a useful recommendation

Operation

Boring, milling, drilling, facing or a combined process.

Workpiece

Material, feature dimensions and required cycle time.

Tooling

Holder, tool diameter, interface and target speed.

Performance

Cutting load, finish, accuracy and duty cycle.

Integration

Mounting drawing, center height, envelope, orientation and control.

XT50-2-BT50-MB selection questions

Confirm these items before the drawing and quotation are approved.

How should I choose the spindle interface?

Start from the holder, tool-change method, cutting load and required accuracy. Send the tool specification and operation for review.

Are all published speed values available on every build?

No. The approved limit depends on bearings, motor, drive ratio, tooling, cutting load and duty cycle.

What changes with the motor arrangement?

MF and MB layouts change the motor envelope, belt path, guarding and maintenance access. Compare the matching drawing with the real machine.

Can JNYO provide a dimensional drawing or 3D model?

Yes, compatible files can be requested after the exact spindle interface, motor layout, ATC and coolant requirements are identified.

What information is needed for a quotation?

Send the workpiece material, operation, tool details, target speed, cutting load, accuracy requirement, machine drawing, quantity and destination country.

Catalog source and configuration limits

JNYO product catalog, PDF page 22; JNYO product catalog, PDF page 23; Chinese edition, approximately 74 MB.

The catalog separates the ordinary NT50 rear-drawbar configuration from the BT50 automatic tool-change configuration. Motor speed and spindle output speed are different quantities; confirm the drive ratio, bearings and complete configuration. The 4,500 rpm spindle option specifies NSK bearings.

Reference weights describe pictured configurations. Catalog roundness is not a workpiece-accuracy guarantee. Confirm measurement conditions, dimensional drawings, actual assembly weight and supply scope before integration.

Engineering files

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.

01DrawingRequest dimensional drawing

Confirm mounting faces, center height, spindle interface and machine envelope.

Send application brief → 023D libraryFind 3D model & CAD files

Search the engineering-file library or request the model for the selected configuration.

Search files → 03Selection reviewCheck the application with JNYO

Share the workpiece, tooling, speed, load, accuracy and motor preferences.

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Related configurations
View product family

Send the process and machine interface before ordering XT50-2-BT50-MB.

JNYO will compare the application, spindle interface, motor, tooling and mounting requirements before confirming a drawing and quotation.

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