Jainnher JHC-2408T-CNC6

Specs verified 2026-10-05 · jainnher.com Updated 2026-10-05

Jainnher JHC-24T series CNC centerless grinding machine

Image: jainnher.com, Jainnher

Key Specifications

Spindle Power

40 HP (29.8 kW)

workpiece diameter range

2 to 230 mm (0.1 to 9.1 in)

wheel size

Ø610 x 205 x Ø304.8 (dia. x width x hole)

regulating wheel size

Ø305 x 205 x Ø127 (dia. x width x hole)

wheel speed

1,050 rpm

regulating wheel speed

10 to 250 rpm, variable speed

How much does the Jainnher JHC-2408T-CNC6 cost?

Price estimate

Uncertain

We do not have a price for the Jainnher JHC-2408T-CNC6 that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

The Jainnher JHC-2408T-CNC6 is a large CNC centerless grinding machine for round work from 2 to 230 mm (0.1 to 9.1 in) in diameter. The grinding wheel is listed as Ø610 x 205 x Ø304.8 (diameter x width x hole), turns at 1,050 rpm and is driven by a 40 HP (29.8 kW) motor.

The T in the name marks the design that separates it from Jainnher's conventional centerless machines. Both the grinding wheel and the regulating wheel feed toward the work, symmetrically, so the centre of the workpiece stays where it is as the wheels wear and are dressed. Jainnher says this was done to suit its large loading and unloading equipment: a bar feeder or receiver lined up once stays lined up.

Six servo motors appear in the specification table. Grinding wheel feed and regulating wheel feed each have 2.5 kW (3.4 hp). The two dressing attachments have 0.5 kW (0.7 hp) each and the two dressing cross slides 0.75 kW (1.0 hp) each. Feeding and dressing are therefore programmed, not set on handwheels, and a profile can be dressed into either wheel. The feed axes run on box ways with C1 class ball screws.

The regulating wheel, Ø305 x 205 x Ø127, is driven by a 5.5 kW (7.4 hp) servo motor at 10 to 250 rpm and tilts from +3° to -5°. The grinding wheel spindle runs in hydrostatic bearings. Jainnher prints an NC3 variant beside this one with fewer servo axes; the figures here are those of the CNC6 column. The machine weighs 7,000 kg (15,432 lb) and occupies 3,100 x 2,400 x 1,950 mm (122.0 x 94.5 x 76.8 in).

Full Specifications

Parameter	Value
Workpiece Diameter Range	2 to 230 mm (0.1 to 9.1 in)
Wheel Size	Ø610 x 205 x Ø304.8 (dia. x width x hole)
Regulating Wheel Size	Ø305 x 205 x Ø127 (dia. x width x hole)
Wheel Speed	1,050 rpm
Regulating Wheel Speed	10 to 250 rpm, variable speed
Spindle Motor Power	40 HP (29.8 kW)
Regulating Wheel Motor	5.5 kW (7.4 hp) servo motor
Spindle Circulating Pump Motor	1 HP + 3 HP
Coolant Pump Motor	1/2 HP
Grinding Wheel Feed Motor	2.5 kW (3.4 hp) servo motor
Grinding Wheel Dressing Attachment Motor	0.5 kW (0.7 hp) servo motor
Regulating Wheel Feed Motor	2.5 kW (3.4 hp) servo motor
Regulating Wheel Dressing Attachment Motor	0.5 kW (0.7 hp) servo motor
Grinding Wheel Dressing Cross Slide Motor	0.75 kW (1.0 hp) servo motor
Regulating Wheel Dressing Cross Slide Motor	0.75 kW (1.0 hp) servo motor
Regulating Wheel Tilt Angle	+3° ~ -5°
Regulating Wheel Swivel Angle	±1°
Machine Dimensions	3,100 x 2,400 x 1,950 mm (122.0 x 94.5 x 76.8 in) (L x W x H)
Machine Weight	7,000 kg (15,432 lb)
Gross Weight	7,500 kg (16,534 lb)

Specifications sourced from jainnher.com — verified 2026-10-05

Strengths & Limitations

Strengths

Takes work from 2 to 230 mm (0.1 to 9.1 in) in diameter, a wide range for one centerless machine
Both wheels feed symmetrically, keeping the work centre fixed for loading equipment
Servo motors on both wheel feeds, both dressing attachments and both dressing cross slides
40 HP (29.8 kW) grinding wheel motor on a hydrostatic spindle
Regulating wheel speed is variable from 10 to 250 rpm by a 5.5 kW (7.4 hp) servo motor

Limitations

Jainnher's page names no control maker or model for the CNC
Wheel width of 205 limits the length of an infeed-ground diameter; no wider T model has a published table
Regulating wheel swivel is only ±1°
Paper filter, hydrocyclone filter, oil cooler and wheel balancing system are optional accessories
At 7,000 kg (15,432 lb) it needs a planned foundation and coolant layout

Best For

Bar, tube and shaft work from 2 to 230 mm (0.1 to 9.1 in) in diameter Thrufeed lines with long bar loading and unloading devices Infeed form grinding with a CNC-dressed wheel profile Production cells where wheel wear must not shift the work centreline

Frequently Asked Questions

01 What does the T mean in JHC-2408T-CNC6?

Jainnher describes the JHC-24T as a machine in which the grinding wheel and the regulating wheel both feed along the axis of symmetry. The stated purpose is to work with the maker's large loading and unloading devices after the wheels wear, which Jainnher says raises production efficiency.

02 Which axes are servo driven?

The CNC6 column of the table lists six servo motors: grinding wheel feed and regulating wheel feed at 2.5 kW (3.4 hp) each, the grinding and regulating wheel dressing attachments at 0.5 kW (0.7 hp) each, and the two dressing cross slides at 0.75 kW (1.0 hp) each. The regulating wheel itself has a 5.5 kW (7.4 hp) servo motor.

03 What wheels does the JHC-2408T-CNC6 use?

The grinding wheel is listed as Ø610 x 205 x Ø304.8 and the regulating wheel as Ø305 x 205 x Ø127, each as diameter x width x hole. Jainnher prints no unit on those rows. The grinding wheel runs at 1,050 rpm and the regulating wheel at 10 to 250 rpm, variable.

04 What is included and what is optional?

Standard accessories include thrufeed and infeed work rests with blades, diamond tools, a thrufeed safety device, a thrufeed process gauge, a coolant tank with pump and a hydraulic tank with pump. Jainnher notes the coolant tank comes without a paper filter or hydrocyclone unit. Those, a magnetic separator, an automatic thrufeed device, parts feeders, an oil cooler and automatic wheel balancing are optional.