XT40-2 Series Boring & Milling Power Head

Product image · configuration may vary

XT40-2 XT40-2 Series

XT40-2 Series Boring & Milling Power Head

Configurable XT40-2 boring and milling spindle head for special-purpose machines, modular machining stations and equipment retrofit projects.

Request XT40-2 drawing & quote WhatsApp JNYO

Spindle interfacesNT40 / MT4 / ER40
Published speed4,500 rpm; 7,000 rpm NSK option
Spindle-head weight35 kg
Published roundness≤ 0.004 mm

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.

XT40-2 configurable spindle platform

A 40-taper spindle platform selected around cutting load, speed and machine integration.

XT40-2 is a configurable boring and milling spindle head for machine builders and retrofit teams. Select the spindle interface, bearing grade, motor, drive ratio and motor position only after the process and installation envelope have been reviewed.

NT40 / MT4 / ER40Published spindle interfaces

4,500 / 7,000 rpmStandard / NSK-bearing option listed

≤ 0.004 mmPublished roundness

35 kgPublished spindle-head weight

Application fit

The model name is only a starting point. Final selection follows the workpiece, operation, tooling and real machine layout.

Special-purpose machines

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

Modular machining units

Spindle modules integrated with mechanical, hydraulic or CNC slide-table assemblies.

Medium-duty production

Applications requiring a 40-taper-class interface with configurable motor and belt drive.

Retrofit projects

Replacement or upgrade work where mounting, center height and service clearance can be verified.

Published selection data

Model platform	XT40-2 boring and milling spindle head
Spindle interfaces	NT40, MT4 or ER40
Housing / spindle material	Confirm housing and spindle material grades, treatment and inspection requirements on the configuration drawing; the cited XT40-2 catalog table does not specify material grades.
Published speed	4,500 rpm standard; 7,000 rpm is listed with the NSK-bearing option
Bearing arrangement	7209 AC/TBT and 7208 AC/DB matched angular-contact bearings
Lubrication	High-speed bearing grease
Published temperature rise	≤ 20°C under the conditions represented by the published data
Published roundness	≤ 0.004 mm; confirm measurement point, method and acceptance conditions
Spindle-head weight	35 kg
Three-phase motor reference	1.5–4 kW; 2-pole 3,000 rpm, 4-pole 1,500 rpm or 6-pole 1,000 rpm listed
Servo spindle motor reference	1.5–5.5 kW; 2,000 rpm rated and 7,000 rpm maximum listed
Drive options	V-belt, synchronous belt or multi-wedge belt; motor and pulley ratio are application dependent
Motor arrangement	Separate platform, front-mounted motor (MF) or rear-mounted motor (MB)
Engineering files	Request the matching dimensional drawing and compatible 3D file before integration

The table follows the cited XT40-2 catalog. Final speed, load, motor, drive ratio, dimensions and acceptance conditions must be stated in the approved drawing and quotation.

Catalog reference: JNYO product catalog, printed pages 11–12 (PDF page 9). Chinese edition, approximately 74 MB. The catalog lists 4,500 rpm and an NSK-bearing 7,000 rpm option; confirm the complete configuration and operating limit. Roundness is not a spindle-runout specification or a guarantee of finished workpiece accuracy.

Choose the physical arrangement first

Compare the platform, front-mounted motor and rear-mounted motor layouts before fixing the electrical and pulley specification.

Current pageXT40-2 platformReview the shared spindle, bearing, motor and drive options before fixing motor position.
Front-mountedXT40-2-MFMotor arranged toward the spindle front. Confirm front space, guarding and maintenance access.
Rear-mountedXT40-2-MBMotor arranged toward the rear. Confirm rear clearance, belt path and service access.

Five inputs for a useful recommendation

Operation

Boring, milling, drilling or a combined process.

Workpiece

Material, feature size and required cycle time.

Tooling

Tool type, diameter, interface and target speed.

Performance

Cutting load, roundness, finish and duty-cycle requirements.

Integration

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

XT40-2 selection questions

Confirm these items before the drawing and quotation are approved.

How do I choose between NT40, MT4 and ER40?

Start from the tool interface, cutting load, tool-change method and required accuracy. Send the tool specification and operation so the complete spindle configuration can be checked.

Is 7,000 rpm available on every XT40-2?

No. The published chart lists 4,500 rpm as the standard value and 7,000 rpm with the NSK-bearing option. The approved limit still depends on the spindle, bearings, drive ratio, motor, cutting load and duty cycle.

What is the difference between XT40-2-MF and XT40-2-MB?

MF uses a front-mounted motor arrangement; MB uses a rear-mounted arrangement. Compare both drawings against the machine envelope, guarding, belt path and maintenance access.

Can JNYO provide a dimensional drawing or 3D model?

Dimensional and compatible 3D files can be requested for integration review. Include the spindle interface and motor arrangement so the matching file is selected.

What information is needed for a quotation?

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

Engineering files