Product image · configuration may vary

XT50-1 XT50-1 Series

XT50-1 BT50 Rear Motorized Spindle

XT50-1-BT50-DC is a rear-mounted motorized spindle with direct rear drive and water cooling; the exact motorized-spindle drawing must be confirmed before integration. Final selection follows the workpiece, tooling, cutting load, duty cycle and machine interface.

Catalog reference: 5,000 rpm maximum; 11.6 kW and 74 N·m rated at 1,500 rpm. Through-spindle coolant is optional.

Request drawing & quote WhatsApp JNYO

Spindle interfaceBT50
DriveDirect rear motor drive
CoolingWater-cooled motorized spindle
Engineering statusConfirm the matching model drawing

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.

XT50-1-BT50-DC selection guide

XT50-1 BT50 Rear Motorized Spindle for machine builders and production-equipment integrators.

BT50Spindle interface

Direct rear motor driveDrive

Water-cooled motorized spindleCooling

Confirm the matching model drawingEngineering status

Application fit

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

Direct-drive response

Reduce the mechanical transmission path with a rear direct-drive motorized spindle.

Controlled spindle orientation

Evaluate speed control and spindle orientation against the machine control system.

Water-cooled operation

Design the cooling loop, flow monitoring and heat rejection around the approved build.

Integrated production cells

Use in dedicated equipment after the complete electrical, hydraulic and mechanical interfaces are checked.

Published selection data

Model page	XT50-1-BT50-DC
Spindle interface	BT50
Drive arrangement	Direct rear motor drive
Cooling	Water-cooled motorized spindle
Tool release	Hydraulic / booster-type release shown in the published material
Control functions	Speed control and orientation depend on the matched drive and feedback. Through-spindle coolant is optional in the catalog parameter table
Source-data note	Maximum speed 5,000 rpm; rated power 11.6 kW and rated torque 74 N·m at 1,500 rpm. Rated torque is not available across the full speed range; consult the torque-speed curve
Engineering file	Request the matching model, motor, cooling and machine-interface drawing before integration
Maximum speed	5,000 rpm
Rated power	11.6 kW
Rated torque	74 N·m
Rated speed	1,500 rpm
Rated frequency	150 Hz
Rated current	29.1 A
Voltage	380 V
Cooling power	2.1 kW
Minimum cooling flow	3 L/min
Cooling inlet temperature	30°C
Through-spindle coolant	Optional
Bearing arrangement	Front 7216AC × 3 (TBT); rear 7214AC × 2 (DB)
Lubrication	High-speed bearing grease
Catalog roundness	≤0.004 mm; confirm measurement and acceptance conditions
Encoder	Square-wave standard; rotary-wave optional, per catalog terminology. Confirm the actual electrical interface before integration
Published assembly weight	185 kg

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.

Current pageRear motorized spindleCompare the interface, load, machine envelope and process requirements before selection.Core platformConventional spindle platformCompare the interface, load, machine envelope and process requirements before selection.ATC optionBelt-driven ATC configurationCompare 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.

XT50-1-BT50-DC selection questions

Confirm these items before the drawing and quotation are approved.

Why use a rear motorized spindle?

Direct rear drive can provide a compact transmission path and controlled speed response when the machine envelope and cooling system support it.

Is water cooling required?

The published motorized-spindle build uses water cooling. Confirm flow, inlet temperature, monitoring, filtration and heat rejection for the selected build.

Are the listed electrical values universal?

No. Speed, power, torque, voltage and feedback depend on the exact model and approved parameter sheet.

Can it support spindle orientation and CTS?

These functions are shown in the source material, but the encoder, control, hydraulic release, seals and coolant system must be matched.

What should I send for selection?

Send the process, tooling, speed/torque duty, voltage, control system, cooling capacity, machine interface and destination country.

Catalog source and configuration limits

JNYO product catalog, PDF page 24; Chinese edition, approximately 74 MB.

Use the motorized-spindle table and torque-speed curve for this exact DC model. Its electrical and cooling values must not be replaced by the ordinary belt-driven series data.

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