Jainnher JHD-3205II
Image: jainnher.com, Jainnher
Key Specifications
grinding type
id grinding capacity
max swing
max workpiece weight
wheel head type
chuck size
How much does the Jainnher JHD-3205II cost?
Price estimate
We do not have a price for the Jainnher JHD-3205II 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 JHD-3205II is the internal-only member of the JHD-3205 double spindle family. Where its siblings pair an external wheel with an internal one, this model carries two internal wheel heads, which Jainnher's table writes as ID, ID.
Two bore spindles solve a specific problem. A part with two bores of very different size, or a bore and an internal face, normally needs a wheel change or a second machine. Here one spindle sits on the Y axis and the other on the Z axis, each with its own 3.75 kW (5 HP) motor, and both reach the part in a single chucking. Roughing with one wheel and finishing with the other is the other obvious use.
Capacity follows the rest of the line: bores from Ø 6 to Ø 200, given also as 0.25 in to 8 in, up to 150 mm deep, in an 8 in chuck with a swing of 500 mm (20 in) and a job weight of 130 kg (287 lb). Because there is no external wheel, the table leaves the maximum grinding diameter and length blank and marks the wheel size and speed on both spindles as dependent on the application.
The axes are those of the JHD-3205IO. X and Y travel 500 mm (19.6 in) and all three rapid at 10 m/min (32.8 ft/min), driven by FANUC β12, 1.8 kW servo motors. The work head swings +15° to -15° by hand and turns at 20 to 1,000 rpm. Size is 3,100 x 2,150 x 2,270 mm (122.0 x 84.6 x 89.4 in).
Full Specifications
| Parameter | Value |
|---|---|
| Grinding Type | Internal |
| ID Grinding Capacity | Ø 6-Ø 200 (0.25"-8") x 150 mm |
| Max Swing | 500 mm (20 in) |
| Max Workpiece Weight | 130 kg (287 lb) |
| Wheel Head Type | ID, ID |
| Chuck Size | 8 in |
| Work Spindle Speed | 20-1000 rpm/min (variable speed) |
| X Axis Travel | 500 mm (19.6 in) |
| Work Head Swing Angle | +15° ~ -15° (Manual) |
| X Axis Rapid Traverse | 10 m/min (32.8 ft/min) |
| X Axis Min Setting Unit | 0.001 mm (0.00004 in) |
| Y Axis Travel | 500 mm (19.6 in) |
| Y Axis Rapid Traverse | 10 m/min (32.8 ft/min) |
| Y Axis Min Setting Unit | 0.001 mm (0.00004 in) |
| Z Axis Travel | 500 mm (20 in) |
| Z Axis Rapid Traverse | 10 m/min (32.8 ft/min) |
| Z Axis Min Setting Unit | 0.001 mm (0.00004 in) |
| X Axis Motor | FANUC β12, 1.8 kW |
| Work Head Motor | FANUC aiF 22, 3.5 kW |
| Y Axis Motor | FANUC β12, 1.8 kW |
| Y Axis Spindle Motor | 3.75 kW (5 HP), 2P |
| Z Axis Motor | FANUC β12, 1.8 kW |
| Z Axis Spindle Motor | 3.75 kW (5 HP), 2P |
| Machine Weight | 5,100 kg (11,243 lb) |
| Gross Weight | 5,500 kg (12,125 lb) |
| Machine Dimensions | 3,100 x 2,150 x 2,270 mm (122.0 x 84.6 x 89.4 in) (L x W x H) |
Specifications sourced from jainnher.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Two internal wheel heads (ID, ID) reach the part in one chucking
- Bores from Ø 6 to Ø 200 up to 150 mm deep
- Each wheel spindle has its own 3.75 kW (5 HP) motor
- FANUC β12, 1.8 kW servo motors on X, Y and Z with a 0.001 mm (0.00004 in) setting unit
- Optional B and C axes, as on the rest of the JHD-3205 series
Limitations
- No external grinding: the table gives no O.D. diameter, length or wheel
- Wheel sizes and speeds for both spindles are not published
- The work head swing of +15° to -15° is manual
- Job weight is limited to 130 kg (287 lb)
Best For
Frequently Asked Questions
01
No. Jainnher lists this model as Internal with wheel head type ID, ID, and leaves the maximum grinding diameter and grinding length blank. For O.D. and I.D. in one chucking the maker offers the JHD-3205IO and JHD-3205IU on the same base.
02
So that two different wheels can work on one part without a wheel change or a second setup. Typical cases are two bores of different size, a bore with an internal face, or roughing and finishing with different wheel grades. Both spindles on this machine have 3.75 kW (5 HP) motors.
03
Jainnher states the I.D. capacity as Ø 6 to Ø 200, or 0.25 in to 8 in, with a depth of 150 mm. The part is held in an 8 in chuck. Maximum swing is 500 mm (20 in) and maximum job weight 130 kg (287 lb).
04
X and Y each have 500 mm (19.6 in) of stroke and Z has 500 mm (20 in) as Jainnher prints it. All three rapid at 10 m/min (32.8 ft/min) with a minimum setting unit of 0.001 mm (0.00004 in). The work head spindle speed is variable from 20 to 1,000 rpm.
