JL-618(SA, 2A, 3A), JL-818(SA, 2A, 3A), JL-2550AH(R), JL-3060AH, JL-4080AH(R) | Custom CNC Grinding and Polishing Solutions by Joen Lih

The overall front view of the Semi-Automatic Precision Surface Grinder | We are dedicated to delivering world-class CNC surface grinding solutions to meet the high demands of our customers for precision and efficiency.

(Saddle Series) Semi-Automatic Precision Surface Grinding Machine - The overall front view of the Semi-Automatic Precision Surface Grinder
  • (Saddle Series) Semi-Automatic Precision Surface Grinding Machine - The overall front view of the Semi-Automatic Precision Surface Grinder

(Saddle Series) Semi-Automatic Precision Surface Grinding Machine

JL-618(SA, 2A, 3A), JL-818(SA, 2A, 3A), JL-2550AH(R), JL-3060AH, JL-4080AH(R)

The semi-automatic grinding machine series offers various options to meet different processing needs. The advantage of this series lies in its relatively lower investment cost, making it an ideal choice for budget-conscious enterprises.

For applications requiring greater flexibility in feed directions, the dual-axis automatic (2A) series is a more suitable choice. This machine can handle complex-shaped workpieces, meeting higher-level grinding requirements.

For more complex machining requirements, the three-axis automatic (3A / AH) series offers advanced functionalities. This series allows for quick vertical infeed for enhanced machine flexibility and broader adaptability.

Features

  • Multiple Standard Worktable Sizes: Provide 6 inches x 18 inches, 8 inches x 18 inches, 10 inches x 20 inches (2550), 12 inches x 25.5 inches (3060), 16 inches x 32 inches (4080).Multiple worktables are available to meet common machining needs in the market. The cross infeed adjustment of the worktable can reach 0.02mm, and the optional M series fine adjustment device allows for precise adjustments of up to 0.002mm.
  • Spindle: Utilizing V-3 grade motor direct drive. With minimal transmission error and excellent lubrication, it can effectively extend the spindle's lifespan. The vertical feed adjustment of the grinding wheel head can reach 0.005mm.
  • and the optional M series fine adjustment device allows for precise adjustments of up to 0.001mm.
  • Rigid Structure: The machine structure is made of advanced Meehanite cast iron, ensuring optimal machine rigidity and vibration resistance.

Standard Accessories

  • Grinding Wheel.
  • Grinding Wheel Flange and Puller.
  • Wheel Balancing Test Arbor.
  • Diamond Dresser with Diamond.
  • Machine Lamp.
  • Levelling Screws Set.
  • Shackle.
  • Necessary Tools with a Tool Box.
  • Lubrication Oil.
  • Operator's Manual.
  • Test Report.

Optional Accessories

  • Permanent Magnetic Chuck and Electro Magnetic Chuck.
  • Inclinable Permanent Magnetic Chuck.
  • Paralleled Dressing Attachment.
  • Angle Dressing Device.
  • Radius Dressing Device.
  • Demagnetizer.
  • Coolant System (without filter) Combination Coolant and Dust Exhaust Unit.
  • Dust Suction System.
  • Wheel Balancing Stand.
  • Grinding Wheel Flange.
  • Punch Former.
  • Precision Vice.
  • Halogen Work Lamp.
  • Electromagnetic Separator Filter.
  • Coolant System with Paper Filter.
  • Coolant System with Auto Paper.
  • Filter and Magnetic Separator.
  • Rectifier.
  • Digital Scale.
  • Sine Bar.
  • Inverter.
  • Hydraulic Oil Chiller.

Specification

Model 618SA / 2A614 / 3A618 818SA / 2A818 / 3A818 3060AH 2550AH / 2550AHR 4080AH / 4080AHR
General Capacity
Table Size mm (inch) 150 x 465 (6" x 1/8") 200 x 465 (8" x 18") 300 x 648 (12" x 25.5") 250 x 500 (10" x 20") 400 x 800 (16" x 32")
Max. Stroke mm (inch) 175 x 472 (7" x 18.8") 205 x 472 (8" x 18.8") 380 x 680 (15" x 27") 270 x 550 (10.8" x 22") 450 x 860 (18" x 34.4")
Max. Surface Ground (mm) 150 x 465 (6" x 18") 200 x 450 (8" x 18") 300 x 600 (12" x 24") 250 x 500 (10" x 20") 400 x 800 (16" x 32")
Max. Distance from center of Spindle to Table 450 mm (18") 450 mm (18") 600 mm (24") 500 Mm (20")
[Optional Height: 600mm (24")]
550 Mm (22")
[Optional Height: 650mm (26")]
Max. Table Load (kgs) - - - 250 400
Longitudinal Movement
Table Speed (Infinite Elevation) 3 ~ 25m/min (120" ~ 1000"/min) 3 ~ 25m/min (120" ~ 1000"/min) 5 ~ 23m/min (200" ~ 920"/min) 5 ~ 25m/min (200" ~ 1000"/min) 5 ~ 25m/min (200" ~ 1000"/min)
Guideway V and Flat Way V and Flat Way V and Flat Way V and Flat Way V and Flat Way
Cross Movement
Auto Cross Feed Increment Approx. 0.1mm ~ 5mm (2A) (0.004" ~ 0.8") 0.1mm ~ 5mm (2A) (0.004" ~ 0.8") 0.1mm ~ 5.5mm (0.004" ~ 0.22") Manual (H model), 0.1 ~ 12 (AH model) 0.5mm ~ 20mm (0.02" ~ 0.8")
Rapid Power Cross Feed Approx.
60Hz
50Hz
 
1300 (52") mm/min
1100 (44") mm/min
 
1300 (52") mm/min
1100 (44") mm/min
 
1400 (56") mm/min
1200 (48") mm/min
 
1100 (44") mm/min
900 (36") mm/min
 
1100 (44") mm/min
900 (36") mm/min
Hand Wheel Increment
1 Revolution
1 Graduation
 
5mm (0.1")
0.02mm (0.0005")
 
5mm (0.1")
0.02mm (0.0005")
 
5mm (0.1")
0.02mm (0.0005")
 
5mm (0.1")
0.02mm (0.0005")
 
5mm (0.1")
0.02mm (0.0005")
Cross Micrometric Feed (Optional)
1 Revolution
1 Graduation
 
0.1mm (0.002")
0.001mm (0.00005")
 
0.1mm (0.002")
0.001mm (0.00005")
 
0.1mm (0.002")
0.001mm (0.00005")
 
0.1mm (0.002")
0.001mm (0.00005")
 
0.1mm (0.002")
0.001mm (0.00005")
Wheel Head Vertical Infeed
Grinding Wheel Rapid Feed
60HZ
50HZ
 
180 (7.2") mm/min (3A)
150 (6") mm/min
 
180 (7.2") mm/min (3A)
150 (6") mm/min
 
AH 420(350) mm/min(16.6") (14")
ATD 280(230) mm/min (11") (9")
 
550mm/min (22"/min)
450mm/min (18"/min)
 
260mm/min (10.4"/min)
220mm/min (8.8"/min)
Hand Wheel Increment
1 Revolution
1 Graduation
 
1mm (0.04")
0.005mm (0.00002")
 
1mm (0.04")
0.005mm (0.00002")
 
2mm (0.08")
0.01mm (0.0004")
 
2mm (0.08")
0.01mm (0.0004")
 
2mm (0.08")
0.01mm (0.0004")
Vertical Micrometric Feed (Optional)
1 Revolution
1 Graduation
 
0.02mm (0.001")
0.0005mm (0.00005")
 
0.02mm (0.001")
0.0005mm (0.00005")
 
0.04mm (0.00016")
0.001mm (0.00005")
 
0.04mm (0.00016")
0.001mm (0.00005")
 
0.04mm (0.00016")
0.001mm (0.00005")
Grinding Wheel
Spindle Speed
60HZ (R.P.M)
50HZ (R.P.M)
 
3500
2900
 
3500
2900
 
1750
1450
 
3500
2900
 
1750
1450
Dimension of the Wheel (mm)
(inch)
180 x 13 x 31.75
(7.2" x 0.5" x 1.25")
180 x 13 x 31.75
(7.2" x 0.5" x 1.25")
355 x 37.5 x 127
(14.2" x 1.5" x 5")
180 x 13 x 31.75
(7.2" x 0.5" x 1.25")
405 x 50 x 127
(16" x 2" x 5")
Motor
Spindle Motor (HP x P) 1.5HP x 2P 2HP x 2P 5HP x 4P 2HP x 2P 5HP x 4P
Hydraulic Pump Motor 1HP x 6P 1HP x 6P 2HP x 6P 1HP x 6P 2HP x 6P
Auto Cross Feed Motor 5RK-40A-S
(2A.3A) (ATD: DC10SP)
5RK-40A-S
(2A.3A) (ATD: DC10SP)
1/5HP X 6P 1/5HP X 6P 1/5HP X 6P
Rapid Head Elevation Motor (Vertical) 5RK-40A-S
2A.3A) (ATD: DC10SP)
5RK-40A-S
(2A.3A) (ATD: DC10SP)
5RK-90A-S (AH)
PK299-01A (ATD)
1/5HP (AHR) 1/5HP (AHR)
Coolant Pump 1/8HP 1/8HP 1/8HP 1/8HP 1/8HP
Sound Pressure Level
Sound Pressure Level dB (A) Below 78dB (A) Below 78dB (A) Below 78dB (A) Below 78dB (A) Below 78dB (A)
Weight
Machine Net Weight kgs (lbs) 1100 (2420 lbs) 1280 (2816 lbs) 2000 (4400 lbs) 1350 3250
Packing Weight kgs (lbs) 1200 (2640 lbs) 1380 (3060 lbs) 2300 (5060 lbs) 1550 3500
Size
Machine Floor Space (mm)
(inch)
2300 x 1750
(92" x 70")
2300 x 1750
(92" x 70")
2600 x 2050
(103" x 81")
2650 x 1750
(104" x 72")
3000 x 2050
(120" x 81")
Packing Size (mm)
(inch)
224 x 136 x 210
(90" x 55" x 84")
224 x 136 x 210
(90" x 55" x 84")
224 x 196 x 210
(90" x 78" x 84")
212 x 146 x 200
(85" x 58.4" x 80")
276 x 228 x 225
(110.4' x 91.2" x 90")
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(Saddle Series) Semi-Automatic Precision Surface Grinding Machine | Joen Lih: Advanced Grinding Solutions for Aerospace & Automotive

JOEN LIH MACHINERY CO., LTD., founded in 1988, is a leading global manufacturer of precision grinding machines, including high-precision (Saddle Series) Semi-Automatic Precision Surface Grinding Machine, flat grinders, profile grinders, and advanced semiconductor polishing equipment. With over 20 years of industry expertise, we offer customized solutions for sectors like medical, aerospace, semiconductor, and automotive, ensuring unmatched stability and precision.

Dedicated to innovation, Joen Lih integrates automation and cutting-edge technologies to deliver superior grinding machinery. We are committed to expanding our global reach, enhancing production efficiency and customer satisfaction across key markets in Asia, Europe, and the Americas.

JOENLIH has been a leading provider of precision grinding machinery for over 20 years, consistently leveraging cutting-edge technology to deliver customized solutions that meet and exceed each customer's specific requirements.

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