High Precision Surface Grinder
The Joen-Lih surface grinders are engineered and manufactured to the highest industry standards starting from the raw castings right up through quality geometry testing.
All grinders start from the finest processed fine grain grey iron castings selected for their outstanding strength and inherent vibration dampening characteristics. Heavy and solid with extensive ribbing throughout, they minimize any possible movement of the workpiece.
The large all cast iron base provides a “rock solid” wide stance footprint to support the entire saddle, table and column assembly. Cast bases are a must as a foundation for strength and integrity in surface grinding operations.
X & Y slideways are coated with Turcite-B and precisely hand scraped, allowing for smooth movement and offering high accuracy. Test reports accompany each grinder to certify the built-in accuracies for these performance machine tools and attest to the meticulous hours of hand labour used in crafting to exacting specifications.
| Specifications | Model Description | JL-614 | JL-614Y | JL-618 | JL-618SA | JL-818 | JL- 3060AH | |
|---|---|---|---|---|---|---|---|---|
| JL-614 M | JL-618M | JL-2A618 | JL- 818SA | JL- 3060ATD | ||||
| JL-3A618 | JL-2A818 | |||||||
| JL-618ATD | JL-3A818 | |||||||
| JL-818ATD | ||||||||
| General capacity | Working surface of table (mm) (inch) | 150X365 | 150X365 | 150X465 | 150x465 | 200x465 | 300x648 | |
| (6"X14") | (6"X14") | (6"x18") | (6"x18") | (8"x18") | (12"x25.5") | |||
| Max. table travel (mm) (inch) | 175x382 | 160x472 | 175x472 | 175x472 | 205x472 | 380x680 | ||
| (7"x15.2") | (7"x18.8") | (7"x18.8") | (8"x18.8") | (15"x27") | ||||
| Max. surface ground (mm) (inch) | 150x350 | 150x350 | 150x450 | 150x450 | 200x450 | 300x600 | ||
| (6"x14") | (6"x14") | (6"x18") | (6"x18") | (8"x18") | (12"x24") | |||
| Max. distance center of spindle to table | 400(16") | 400mm(16") 450mm(18") | 600mm(24") | |||||
| Longitudinal Movement | Table speed | 3 ~ 25mm/min | 5 ~ 23mm/min | |||||
| (Infinite Variable) | (0.12" ~ 1"/min) | (0.2" ~ 0.9"/min) | ||||||
| Table guideway | V & V way | |||||||
| Cross Movement | Auto. Cross feed | 0.1mm ~ 5mm/min(2A) | 0.1mm ~ 5.5mm/min | |||||
| increment approx. | (0.004" ~ 0.5"/min) | (0.004" ~ 0.22"/min) | ||||||
| Rapid power cross feed (mm/min) apporx. | 1300(52")mm/min(2A) [60Hz] | 1400(56")mm/min [60Hz] | ||||||
| 1100(44")mm/min [50Hz] | 1200(48")mm/min [50Hz] | |||||||
| Cross feed on hand wheel | 1rev 1gra | 5mm(0.1" ) | ||||||
| 0.02mm(0.0005") | ||||||||
| Cross micrometric feed (option) | 1rev 1gra | 0.1mm(0.002") [option] | ||||||
| 0.002mm(0.00005") [option] | ||||||||
| Vertical Downfeed | Rapid power head elevation - 60Hz | 180(7.2")mm/min(3A) [60Hz] | AH 420(350)mm/ | |||||
| approx. - 50Hz | 150(6")mm/min [50Hz] | min(16.8")(14") | ||||||
| ATD 280(230)mm/ | ||||||||
| min(11.2")(9.2") | ||||||||
| Vertical feed on hand wheel | 1rev 1gra | 1mm(0.04") | 2mm(0.08") | |||||
| 0.005mm(0.0002") | 0.01mm(0.0004") | |||||||
| Vertical micrometric feed (option) | 1rev 1gra | 614 / 618M 0.02mm(0.001") | 0.02mm(0.001") [option] | |||||
| 614 / 618M 0.001mm(0.00005") | 0.001mm(0.00005") [option] | |||||||
| Auto. Down feed | 0.001mm / P,P.S(ATD) | 0.001mm / P,P.S(ATD) | ||||||
| Grinding Wheel | Wheel speed 60Hz/50Hz | 3500/2900R,P.M. | 1750/1450 R.P.M | |||||
| Wheel dimension | 180x13x31.75 | 355x37.5x127 | ||||||
| mm (inch) | (7.2"x0.5"x1.25") | (14.2"x1.5"x5") | ||||||
| Motors | Spindle motor | 1.5HPx2P | 1.5HPx2P | 1.5HP x2P | 1.5HP x2P | 2HPx2P | 5HPx4P | |
| Hyraulic pump motor | 1HPx6P | 2HPx6P | ||||||
| Auto. Cross feed motor | 5RK-40A-S(2A.3A)(ATD:DC 10SP) | 1/5HPx6P | ||||||
| Rapid head elevation motor (VERTICL) | 5RK-40A-S(3A),103-815-2(ATD) | 5RK-90A-S (AH), | ||||||
| PK299-01A(ATD) | ||||||||
| Coolant pump | 1/8HP | |||||||
| Sound pressure level | Sound pressure level | below 78dB(A) | ||||||
| Weight | Machine Net weight | 570 | 690 | 690 | 750 | 850 | 2000 | |
| Kgs (Lbs) | (1254 Lbs) | (1518 Lbs) | (1518 Lbs) | (1650 Lbs) | (1870 Lbs) | (4400 Lbs) | ||
| Packing Gross weight | 670 | 790 | 790 | 900 | 1000 | 2300 | ||
| Kgs (Lbs) | (1474 Lbs) | (1738 Lbs) | (1738 Lbs) | (1980Lbs) | (2200 Lbs) | (5060 Lbs) | ||
| Size | Machine Floor space | 1550x1500 | 1800x1100 | 1800x1100 | 1950x1200 | 1950x1200 | 2600x2050 | |
| mm (inch) | (60"x60") | (72"x44") | (72"x44") | (78"x48") | (78"x48") | (104"x82") | ||
| Packing dimension (LxWxH) cm (inch) | 134x104x210 | 140x104x210 | 140x104x210 | 200x106x210 | 195x106x210 | 224x196x210 | ||
| (54"x42"x84") | (56"x42"x84") | (56"x42"x84") | ATD(224x133x210) | ATD(224x133x210) | (90"x78"x84") | |||
| (90"x53"x84") | (90"x53"x84") |