CNC cylindrical grinding machine
MK Series CNC Cylindrical Grinding Machine
Eleven CNC frames on one range, from a 60 mm centre height up to a 270 mm frame taking 1 t between 4000 mm centres. Domestic control, SIEMENS 828D or FANUC 0iTF.
Features
- Eleven frames from 250 mm to 4000 mm between centres and 60 mm to 270 mm centre height.
- MK14 and MKE frames grind internal as well as external; MK13 and MK16 frames are external only.
- MK1408, MK1412 and MK1420 are the precision end of the range, at Ra 0.08 μm to Ra 0.16 μm.
- Domestic control, SIEMENS 828D or FANUC 0iTF, to the customer's choice.
- Stepless workhead drive on every frame, inverter controlled on the small ones.
- Wheel peripheral velocity from 30 m/s to 45 m/s depending on frame.
Specification
Published catalogue figures. Options and non-standard travels are quoted separately.
| Item | Unit | MK1408 | MK1412 | MK1420 | MK1320B | MK1332 | MK1332H | MKE1432 | MK1620B | MK1632 | MK1350 | MKE1450 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| General capacity | ||||||||||||
| Distance between centres | mm | 250 | 250 | 500 | 500 / 750 / 1000 | 1000 / 1500 | 2000 / 3000 | 1000 / 1500 | 500 / 750 | 1000 / 1500 / 2000 / 3000 | 1500 / 2000 / 3000 / 4000 | 1500 |
| Centre height | mm | 60 | 80 | 125 | 135 | 180 | 180 | 180 | 135 | 180 | 270 | 270 |
| Diameter ground, O.D. | mm | 0.6-80 | 0.8-120 | 5-200 | 8-200 | 8-320 | 8-320 | 8-320 | 8-200 | 8-320 | 25-500 | 25-500 |
| Diameter ground, I.D. | mm | 2-20 | 3-40 | 13-80 | — | — | — | 30-100 | — | — | — | 30-200 |
| Max. length ground, I.D. | mm | 50 | 50 | 125 | — | — | — | 125 | — | — | — | 320 |
| Max. weight of workpiece | kg | 5 | 10 | 50 | 50 | 150 | 300 | 150 | 50 | 150 | 1000 | 1000 |
| Workhead | ||||||||||||
| Centre taper | — | MT1 | MT3 | MT4 | MT4 | MT5 | MT5 | MT4 | MT4 | MT5 | MT6 | MT6 |
| Spindle speed, stepless | r/min | 30-300 at 50 Hz, inverter | 100-1000, stepless | 30-300 at 50 Hz, inverter | 26-260 at 50 Hz | 19-190 at 50 Hz | 10-100 at 50 Hz | 26-260 at 50 Hz | 26-260 at 50 Hz | 19-190 at 50 Hz | 10-100 at 50 Hz | 10-100 at 50 Hz |
| Wheelhead | ||||||||||||
| Max. wheel size, OD × W × ID | mm | 150×20×51 | 250×25×76 | 400×50×203 | 400×50×203 | 600×75×305 | 600×75×305 | 400×50×203 | 500×75×203 | 600×75×305 | 750×75×305 | 500×75×203 |
| Wheel peripheral velocity | m/s | ≤ 30 | ≤ 35 | ≤ 45 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 |
| Rotation angle of the wheel holder | deg | — | — | — | — | — | — | ±8 | — | — | — | ±8 |
| Internal grinding device | ||||||||||||
| Spindle speed | r/min | — | — | — | — | — | — | 10000 | — | — | — | 10000 |
| Wheel size | mm | — | — | — | — | — | — | Max. 50×25×13Min. 17×20×6 | — | — | — | Max. 175×32×32Min. 30×25×10 |
| Table | ||||||||||||
| Max. swivelling angle, clockwise | deg | 8 | 6 | 9 | 5 (500) / 3 (750, 1000) | 3 | 3 | 3 | 5 (500) / 3 (750) | 3 (1000, 1500) / 2 (2000, 3000) | 3 (1500) / 2 (2000, 3000) / 1 (4000) | 3 |
| Max. swivelling angle, anticlockwise | deg | 8 | 7 | 9 | 9 | 7 (1000) / 6 (1500) | 5 (2000) / 3 (3000) | 7 (1000) / 6 (1500) | 9 | 7 (1000) / 6 (1500) / 5 (2000) / 3 (3000) | 6 (1500) / 5 (2000) / 3 (3000) / 2 (4000) | 6 |
| Tailstock | ||||||||||||
| Centre taper | — | MT1 | MT2 | MT4 | MT4 | MT4 | MT5 | MT4 | MT4 | MT4 | MT6 | MT6 |
| Quill travel | mm | 16 | 15 | 23 | 30 | 30 | 30 | 30 | 30 | 30 | 70 | 70 |
| Electrics | ||||||||||||
| CNC system | — | Domestic system, SIEMENS 828D, FANUC 0iTF or others | ||||||||||
| Wheelhead motor | kW | 1.5 | 1.5 | 4 | 4 | 11 | 11 | 5.5 | 7.5 | 11 | 15 | 5 / 7.5 |
| Workhead motor | kW | 1.1 | 1.1 | 1.1 | 1.1 | 1.5 | 3 | 2 | 1.1 | 1.5 | 4 | 1.5 |
| Machining accuracy | ||||||||||||
| Roundness | μm | 0.0006 | 0.001 | 0.003 | 2 | 2.5 | 3 | 3 | 2 | 3 | 2.5 (1500) / 3 (2000, 3000, 4000) | 2.5 |
| Cylindricity | μm | 0.002 | 0.003 | 0.005 | 4 | 6 | 6 | 6 | 4 | 6 | 6 (1500, 2000, 3000) / 12 (4000) | 6 |
| Roughness | μm | Ra 0.08 | Ra 0.16 | Ra 0.16 | Ra 0.2 | Ra 0.2 | Ra 0.32 | Ra 0.32 | Ra 0.32 | Ra 0.32 | Ra 0.32 | Ra 0.32 |
| Machine | ||||||||||||
| Gross weight, approx. | t | — | — | — | 3.2 (500) / 3.6 (750) / 4.6 (1000) | 4.6 (1000) / 5.1 (1500) | 6.7 (2000) / 8.3 (3000) | 3.8 (1000) / 4 (1500) | 4.3 (500) / 4.6 (750) | 4.6 (1000) / 5.1 (1500) / 5.7 (2000) / 6.9 (3000) | 10 (1500) / 11 (2000) / 13 (3000) / 17 (4000) | 9.5 |
| Packing dimension, L × W × H | cm | — | — | — | 285×190×220 (500) / 340×190×220 (750)425×225×220 (1000) | 425×225×220 (1000)545×225×220 (1500) | 620×230×225 (2000)820×230×225 (3000) | 326×190×205 (1000)426×190×205 (1500) | 340×225×220 (500)390×225×220 (750) | 465×230×220 (1000) / 585×230×220 (1500)650×245×220 (2000) / 845×245×220 (3000) | 543×225×210 (1500) / 583×225×210 (2000)796×225×210 (3000) / 996×225×210 (4000) | 543×225×210 |
Request A Quote
Get A Tailored Quote For The MK Series
Send The Largest Part Dimensions, The Material And The Tightest Tolerance. Our Engineers Confirm Whether The MK Series Fits And Reply With A Detailed Quotation.
- +86 15162661999
- info@hankray.com
-
Room 1804-2, No. 33 Xinggui Street, Suzhou Industrial Park, Suzhou, Jiangsu, China
Model FAQs
Questions Engineers Ask About The MK Series
What shaft sizes does the MK Series cover?
The MK Series grinds diameters of stated per model on the specification table mm. Ground length runs to 50 / 50 / 125 / — / — / — / 125 / — / — / — / 320 mm. Quote finished diameter, length and workpiece weight together: the three place the machine, and weight is the one buyers forget.
Should my parts run between centres or in a chuck on the MK Series?
Between centres whenever several diameters must stay concentric to one axis — the centre holes are the datum, so inspect and lap them before precision work. Chucks or collets take over when there are no centres or a bore is the reference. On the MK Series, slender work past roughly ten diameters of unsupported length wants a steady rest carrying the span.
What grinding wheel does the MK Series take?
Maximum wheel size on the MK Series is stated per model on the specification table. Wheel choice — abrasive, grade, structure — is matched to your material and finish target at quotation, and shoulder work needs the wheel width checked against the shoulder clearance on your drawing before the machine is sized.
MK Series or MKKZ Series — which fits my work?
Both sit in the cNC cylindrical grinding machine group, so the decision is capacity and duty, not kind: put your largest part dimensions, material and yearly quantity against each specification table and one of the two will run out of a figure first. Send the drawing and we will name which of the two fits — including the case where the smaller machine does the job.
What acceptance testing does the MK Series go through?
Every machine in the MK Series range is laser-measured to ISO 230-2 over its travels, cuts a test piece that is measured rather than admired, and ships with a serial-numbered report carrying the measured values. If any line misses, the machine goes back into the shop until it passes — the report is a record, not a promise.
