JL-614(M), JL-618(M、SB), JL-818(M) | Custom CNC Grinding and Polishing Solutions by Joen Lih

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

Manual Precision Surface Grinding Machine - The overall front view of the Manual Precision Surface Grinding Machine
  • Manual Precision Surface Grinding Machine - The overall front view of the Manual Precision Surface Grinding Machine

Manual Precision Surface Grinding Machine

JL-614(M), JL-618(M、SB), JL-818(M)

Joen Lih's precision manual surface grinder series features a machine structure made of advanced Meehanite cast iron, ensuring optimal machine rigidity and vibration resistance. The slideways are equipped with Turcite-B (wear-resistant material) and undergo precision scraping, ensuring smooth travel movements and maintaining high-precision machining.

In the SB series, the worktable employs steel ball rolling slideways, effectively reducing friction resistance on the sliding surface. This makes the lateral movement of the worktable smoother, particularly suitable for small-batch and diverse grinding operations.

Features

  • Multiple Standard Worktable Sizes: Provide 6 inches x 14 inches, 6 inches x 18 inches, 8 inches x 18 inches. Multiple worktables are available to meet common machining needs in the market 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.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

ModelJL-614 / 614MJL-618II / 618MJL-818 / 818MJL-618SB
General Capacity
Table Size mm (inch)150 x 365 (6” x 14”)150 x 465 (6” x 18”)200 x 465 (8” x 18”)150 x 465 (6" x 1/8")
Max. Stroke mm (inch)175 x 382 (7” x 15”)175 x 472 (7” x 18.6”)205 x 472 (8” x 18.6”)175 x 472 (7" x 18.8")
Max. Surface Ground mm (inch) 
150 x 350 (6” x 14”)
 
150 x 450 (6” x 18”)
 
200 x 450 (8” x 18”)
 
150 x 465 (6" x 18")
Max. Distance from center of Spindle to table400mm (16”)400mm (16”)450mm (18”)450mm (18”)
Longitudinal Movement
Table Speed (Infinite Elevation)--3 ~ 25m/min (120"~1000"/min) 
GuidewayV and Flat WayV and Flat WayV and Flat WayBall Bearing Roller Slider
Cross Movement
Hand Wheel Increment
(Optional)
1 Revolution
1 Graduation
 
5mm (0.2")
0.02mm (0.0008")
 
5mm (0.2")
0.02mm (0.0008")
 
5mm (0.2")
0.02mm (0.0008")
 
5mm (0.2")
0.02mm (0.0008")
Cross Micrometric Feed
1 Revolution
1 Graduation
 
0.1mm (0.004")
0.001mm (0.00005")
 
0.1mm (0.004")
0.001mm (0.00005")
 
0.1mm (0.004")
0.001mm (0.00005")
 
0.1mm (0.004")
0.001mm (0.00005")
Cross Movement
Hand Wheel Increment
1 Revolution
1 Graduation
 
1mm (0.04")
0.005mm (0.00002")
 
1mm (0.04")
0.005mm (0.00002")
 
1mm (0.04")
0.005mm (0.00002")
 
1mm (0.04")
0.005mm (0.00002")
Vertical Micrometric Feed (Optional)
1 Revolution
1 Graduation
 
0.02mm (0.0008")
0.001mm (0.00004")
 
0.02mm (0.0008")
0.001mm (0.00004")
 
0.02mm (0.0008")
0.001mm (0.00004")
 
0.02mm (0.0008")
0.001mm (0.00004")
Grinding Wheel
Spindle Speed
60HZ (R.P.M)
50HZ (R.P.M)
 
3500
2900
 
3500
2900
 
3500
2900
 
3500
2900
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")
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")
Motor
Spindle Motor (HP x P)1.5HP x 2P1.5HP x 2P2HP x 2P1.5HP x 2P
Sound Pressure Level
Sound Pressure LevelBelow 78dB (A)Below 78dB (A)Below 78dB (A)Below 78dB (A)
Weight
Machine Net Weight kgs (lbs)570 (1254)730 (1738)850 (1870)815 (1793)
Packing Weight kgs (lbs)670 (1474)810 (1958)1000 (2200)915 (2013)
Size
Machine Floor Space (mm)
(inch)
1500 x 1300
60” x 52”
1800 x 1100
75” x 52”
1950 x 1200
78” x 48”
1900 x 1300
76” x 52”
Packing Size (L x W x H) (mm)
(inch)
134 x 104 x 210
53” x 41 x 83”
140 x 109 x 210
56” x 43” x 83
170 x 117 x 210
68” x 47” x 83”
160 x 113 x 220
64” x 45.2” x 88”
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Manual 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 Manual 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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