Jainnher JHU-2720CNC
Key Specifications
Spindle Power
max work swing
max grinding length
max grinding diameter
max workpiece weight
work spindle speed 60hz
How much does the Jainnher JHU-2720CNC cost?
Price estimate
We do not have a price for the Jainnher JHU-2720CNC 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 JHU-2720CNC is the longest machine in the 270 mm (10.6 in) swing JHU-CNC line: a CNC universal cylindrical grinder with a 2,000 mm (78.7 in) grinding length.
Two metres of length on a 250 mm (9.8 in) grinding diameter, with 130 kg (287 lb) between centers, defines the work closely. These are slender parts. A solid steel bar of that length reaches the weight limit at a small diameter, so the typical jobs are piston rods, guide shafts, long spindles, tubes and rolls with thin walls. Anything of that shape needs steadying, and a 2-point center rest is included.
The long table is the least willing to swivel. Jainnher gives 5° counter-clockwise and 3° clockwise, the smallest range in the family. On a part this long that is still a large correction, and its real use is taking out taper along a shaft, not grinding steep cones. Steep angles are the job of the work head, which swivels 120°.
Plan the building around it. Jainnher's approximate size is 6,800 x 2,160 x 2,310 mm (267.7 x 85.0 x 90.9 in), and the table needs clearance to travel beyond that at each end. Gross weight is about 8,400 kg (18,519 lb). Loading a two-metre shaft into a fully enclosed machine is a question to raise with the maker, since the full splash guard is standard on the CNC models.
The wheel head is common to the range, with 175 mm (6.9 in) of travel and a 0.001 mm setting unit.
Full Specifications
| Parameter | Value |
|---|---|
| Max Work Swing | 270 mm (10.6 in) |
| Max Grinding Length | 2,000 mm (78.7 in) |
| Max Grinding Diameter | 250 mm (9.8 in) |
| Max Workpiece Weight | 130 kg (287 lb) |
| Work Spindle Speed 60hz | 11 to 500 rpm at 60 Hz (variable speed) |
| Work Spindle Speed 50hz | 9 to 420 rpm at 50 Hz (variable speed) |
| Work Head Swivel Angle | 120° (CCW: 90°; CW: 30°) |
| Center Taper | MT.4 |
| Work Spindle Rotation | Setting, Normal and reverse rotation |
| Table Swivel Angle Ccw Cw | 5° / 3° |
| Table Min Setting Unit | 0.001 mm |
| Wheel Size | 405 x (25 ~ 50) x 152.4; 455 x 50 x 152.4 (opt.) (D x W x B) |
| Max Peripheral Speed | 2,000 m/min |
| Wheel Head Max Feed Rate | 6 m/min (236 ipm) |
| Wheel Head Travel | 175 mm (6.9 in) |
| Wheel Head Min Setting Unit | 0.001 mm |
| Tailstock Center Travel | 30 mm (1.2 in) |
| Tailstock Center | MT4 |
| Spindle Motor Power | 3.75 kW, 5 HP, 4P; 7.5 HP (5.6 kW) (opt.) |
| Worktable Motor | 1.8 kW (2.4 hp) |
| Hydraulic Motor | 0.75 kW (1 HP), 4P |
| Servo Motor X | 1.2 kW (1.6 hp) |
| Servo Motor Y | 2.5 kW (3.4 hp) |
| Hydraulic Tank | 60 L |
| Lubrication Tank | 30 L |
| Coolant Tank | 100 L |
| Gross Weight | 8,400 kg (18,519 lb) (approx.) |
| Machine Dimensions | 6,800 x 2,160 x 2,310 mm (267.7 x 85.0 x 90.9 in) (L x W x H) (approx.) |
Specifications sourced from jainnher.com — verified 2026-10-05
Strengths & Limitations
Strengths
- 2,000 mm (78.7 in) grinding length, the longest in the 270 mm (10.6 in) swing series
- 2-point center rest included as standard for long work
- Work head swivels 120° for steep angles and face grinding
- Table swivel of 5° and 3° is available for correcting taper along a long shaft
Limitations
- 130 kg (287 lb) between centers limits a 2,000 mm (78.7 in) part to slender sections
- Smallest table swivel of the range: 5° counter-clockwise and 3° clockwise
- About 6,800 mm (267.7 in) long before table overtravel is allowed for
- Wheel head travel is 175 mm (6.9 in), the same as on the shortest machine
Best For
Frequently Asked Questions
01
Up to 2,000 mm (78.7 in), with a maximum work swing of 270 mm (10.6 in) and a maximum grinding diameter of 250 mm (9.8 in). The job weight limit between centers is 130 kg (287 lb), so long parts have to be light for their length.
02
Yes, within limits. The table swivels 5° counter-clockwise and 3° clockwise. For steeper angles on short features the work head swivels 120°, 90° counter-clockwise and 30° clockwise. Jainnher also lists tapered traverse grinding among the applications.
03
Jainnher's approximate machine size is 6,800 x 2,160 x 2,310 mm (267.7 x 85.0 x 90.9 in). Approximate gross weight is 8,400 kg (18,519 lb). Allow extra length for table travel and for loading long shafts.
04
Yes. The JHU-3520CNC has the same 2,000 mm (78.7 in) grinding length with a 350 mm (13.8 in) work swing and a 330 mm (13.0 in) grinding diameter. Its gross weight is about 8,500 kg (18,739 lb).
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