Product image · configuration may vary

XT45-2 XT45-2 Series

XT45-2 BT40 Rear Motorized Spindle

XT45-2-BT40-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.

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DC-S and DC-H have different rated operating points and cooling requirements; through-spindle coolant is optional.

Spindle interfaceBT40
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.

XT45-2-BT40-DC selection guide

XT45-2 BT40 Rear Motorized Spindle for machine builders and production-equipment integrators.

BT40Spindle 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	XT45-2-BT40-DC
Spindle interface	BT40
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
Published build options	DC-S: maximum 5,000 rpm, rated 8.4 kW / 50 N·m at 1,600 rpm; DC-H: maximum 8,000 rpm, rated 10.3 kW / 28 N·m at 3,500 rpm. Read the full S/H table below
Voltage	380 V
Published assembly weight	96 kg
Engineering file	Request the matching model, motor, cooling and machine-interface drawing before integration

DC-S and DC-H configuration comparison

Parameter	DC-S	DC-H
Maximum speed	5,000 rpm	8,000 rpm
Rated power	8.4 kW	10.3 kW
Rated torque	50 N·m	28 N·m
Rated speed	1,600 rpm	3,500 rpm
Rated frequency	160 Hz	350 Hz
Rated current	18.7 A	25 A
Voltage	380 V	380 V
Cooling power	1.5 kW	1.3 kW
Minimum cooling flow	5.3 L/min	1.8 L/min
Cooling inlet temperature	30°C	30°C
Through-spindle coolant	Optional	Optional
Spindle interface	BT40	BT40
Bearings	7213AC × 3 (TBT); 7212C × 2 (DB)	7213AC × 3 (TBT); 7212C × 2 (DB)
Lubrication	High-speed bearing grease	High-speed bearing grease
Catalog roundness	≤0.004 mm	≤0.004 mm
Tool release	Hydraulic / booster type	Hydraulic / booster type
Encoder	Square-wave standard; rotary-wave optional, per catalog terminology	Square-wave standard; rotary-wave optional, per catalog terminology

Rated torque applies at the stated rated operating point, not across the entire speed range. Confirm the torque-speed curve, drive and cooling system. The encoder translation follows the source; obtain the actual electrical interface specification 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.

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.

XT45-2-BT40-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 19; Chinese edition, approximately 74 MB.

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

Engineering files