Jainnher JHP-4006CNC
Key Specifications
Spindle Power
grinding type
max work swing
max grinding length
max grinding diameter
max workpiece weight
How much does the Jainnher JHP-4006CNC cost?
Price estimate
We do not have a price for the Jainnher JHP-4006CNC 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 JHP-4006CNC is a CNC plunge cylindrical grinder with a 400 mm (15.7 in) swing over a 600 mm (23.6 in) center distance. In Jainnher's table it stands beside the JHP-3506CNC and differs from it in two rows only: the swing, and a grinding diameter printed as Ø380 where the smaller machine has Ø330.
Everything else is shared, down to the 7,460 kg (16,446 lb) net weight, which tells you the two are one casting with different center heights. The choice is therefore simple. Take this model if any part in the plan is larger than the JHP-3506CNC will swing, and expect no penalty in footprint or power for doing so. Job weight is 150 kg (331 lb) on both.
What the page says about measuring is worth more attention than the size. A touch probe gauge is standard and locates the part axially before the wheel comes in. An auto in-process gauge is optional; it measures the outside diameter while grinding and feeds back to the control. Automatic wheel balancing, a crash control device that retracts the wheel on overload, a thickness gauge and a Z-axis linear scale are further options. For a plunge grinder making bearing seats to size in one infeed, the in-process gauge is the option that decides whether parts come off finished.
The wheel head has 280 mm (11.0 in) of travel and a 6 m/min (236 ipm) rapid. The standard wheel motor is 7.5 HP (5.6 kW).
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Type | CNC plunge |
| Max Work Swing | 400 mm (15.7 in) |
| Max Grinding Length | 600 mm (23.6 in) |
| Max Grinding Diameter | Ø380 |
| Max Workpiece Weight | 150 kg (331 lb) |
| Distance Between Centers | 600 mm (23.6 in) |
| Wheel Size | Ø510 x 50 ~ 100 x Ø203.2 |
| Wheel Speed | 1,250 rpm |
| Max Peripheral Speed | 33 m/sec |
| Wheel Head Feed Angle | 90° |
| Wheel Head Swivel Angle | ±0° |
| Wheel Head Rapid Traverse | 6 m/min (236 ipm) |
| Wheel Head Travel | 280 mm (11.0 in) |
| Wheel Head Min Setting Unit | 0.0001 mm |
| Wheel Head Grinding Feed Rate | 0.001 to 6,000 mm/min |
| Tailstock Sleeve Retraction | 30 mm (1.2 in) |
| Tailstock Sleeve Diameter | 70 mm (2.8 in) |
| Center Taper | NO#4 (Opt. NO.#5) |
| Work Spindle Speed | 10 ~ 500 rpm/min (variable) |
| Work Spindle Type | Cartridge type (Opt.) |
| Work Head Swivel Angle | 120 (90CCW ; 30CW) |
| Table Swivel Angle Cw | +9 |
| Table Swivel Angle Ccw | -5 |
| Table Min Setting Unit | 0.0001 mm |
| Table Travel | 700 mm (27.6 in) |
| Table Grinding Feed Rate | 0.001 to 6,000 mm/min |
| Spindle Motor Power | 7.5 HP (5.6 kW), 4P; optional 10 HP (7.5 kW), 4P |
| Work Head Motor | 1.5 kW (2.0 hp) |
| Z Axis Motor | 1.8 kW (2.4 hp) |
| X Axis Motor | 1.8 kW (2.4 hp) |
| Hydraulic Oil Tank | 60 L |
| Wheel Head Lubrication Tank | 50 L |
| Coolant Tank | 160 L |
| Machine Weight Fully Enclosed | 7,460 kg (16,446 lb) |
| Machine Weight Semi Enclosed | 6,840 kg (15,079 lb) |
| Gross Weight Fully Enclosed | 7,860 kg (17,328 lb) |
| Gross Weight Semi Enclosed | 7,240 kg (15,961 lb) |
Specifications sourced from jainnher.com — verified 2026-10-05
Strengths & Limitations
Strengths
- 400 mm (15.7 in) swing on the same base and weight as the JHP-3506CNC
- Touch probe gauge is standard for axial positioning before grinding
- Optional auto in-process gauge measures the O.D. while grinding
- Optional crash control retracts the wheel when the workpiece is over-ground
- Wheel motor of 7.5 HP (5.6 kW), with 10 HP (7.5 kW) optional
Limitations
- Grinding length is 600 mm (23.6 in); longer shafts need the JHP-4010CNC with 1,000 mm (39.4 in)
- Job weight is 150 kg (331 lb) despite the larger swing
- In-process gauge, wheel balancing system and Z-axis linear scale are all options
- Jainnher prints machine dimensions without a unit, so get a layout drawing
Best For
Frequently Asked Questions
01
On paper, yes. The JHP-3506CNC has a 350 mm (13.8 in) swing and the JHP-4006CNC a 400 mm (15.7 in) swing, and the printed grinding diameters are Ø330 and Ø380. Travels, motors, tanks and weights are the same in both columns of Jainnher's table.
02
A touch probe gauge is a standard accessory. Jainnher lists as optional an auto in-process gauge, a wheel balancing system, a thickness measuring gauge and a Z-axis linear scale, and also shows a wheel crash control device. The in-process gauge measures workpiece O.D. during grinding and can check roundness afterwards.
03
Between No. 4 centers as standard, with No. 5 optional; tungsten carbide tipped centers are included. The hydraulic tailstock has a 70 mm (2.8 in) sleeve that retracts 30 mm (1.2 in). A 6 in or 8 in 3-jaw scroll chuck, work holders and steady rests are optional.
04
Fully enclosed, 7,460 kg (16,446 lb) net and 7,860 kg (17,328 lb) gross. Semi enclosed, 6,840 kg (15,079 lb) net and 7,240 kg (15,961 lb) gross.
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