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Palmary PC-18S/1810S/1812S/20S Centerless Grinders

Item #: PC-18S/1810S/1812S/20S

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Palmary PC-18S/1810S/1812S/20S Centerless Grinders

  • 1. Rigid Machine Structure
  • (1) The machine structure is manufactured from high quality Meehanite cast iron, heat treated and stress relieved before machining.
  • (2) Sideways are high frequency hardened and precision ground. Maximum material stability for deformation-free and outstanding wear resistance.
  • 2. Precision Spindles
  • (1) The grinding wheel spindle and the regulating wheel spindle are precision machined from Nickel Chromolybedenum alloy steel (SNCM-220). Also, they are subject to various treatments such as: normalized, tempered and carburized hardening. Then, the spindles are thru sub-zero treated – under zero degrees, precision ground and precision machined.
  • (2) The inside of spindle is tempered to hardness HRC 25°~30°, while surface hardness reaches over HRC 62. The precision ground spindle is excellent for heavy-duty machining and features powerful torque, long service life, deformation-free and maximum wear resistance.
  • 3. Slide Table
  • (1) Upper slide swiveling is easy and accurate to adjust for making the machine suitable for infeeding grinding. Also, it allows grinding for a varied diameter of workpieces. The Upper slide with +5°~-5° swiveling allows taper grinding by using infeed grinding mode.
  • (2) With thrufeed grinding, the Upper slide provides a surface contact adjustment between the workpiece and grinding wheel. Swiveling adjustment range is +5°~-3°.
  • (3) Dovetailed slideway on the upper slide features smooth and accurate feeding and is lubricated by a centralized lubricator.
  • (4) The bottom slide moves on “Λ” shaped and double-wedged ways.
  • The slideways are hardened and precision ground. They feature smooth movement and properly protected to prevent dust from entering. Micrometric feed adjustment unit is 0.001 mm to meet high accuracy requirements for all workpieces.

Controls: Fanuc or Mitsubishi

SPECIFICATIONS

PC-18S

PC-1810S

PC-1812S

PC-20S

Grinding Wheel

       

Standard grinding range (Dia.)

Ø1~Ø80 mm

Ø1~Ø80 mm

Ø1~Ø80 mm

Ø1~Ø80 mm

Capacity increases with special arrangement

Ø40~Ø150 mm

Ø40~Ø150 mm

Ø40~Ø150 mm

Ø40~Ø150 mm

Grinding wheel size (O.D. x width x I.D.)

Ø455 x 205 x Ø228.6

Ø455 x 255 x Ø228.6

Ø455 x 305 x Ø228.6

Ø510 x 205 x Ø304.8

Grinding wheel speed

1500 R.P.M.

1500 R.P.M.

1500 R.P.M.

1200 R.P.M.

Grinding wheel motor

15 HP x 4P

15 HP x 4P

20 HP x 4P

20 HP x 4P

Regulating Wheel

       

Regulating Wheel size (O.D. x width x I.D.)

Ø255 x 205 x Ø111.2

Ø255 x 255 x Ø111.2

Ø255 x 305 x Ø111.2

Ø305 x 205 x Ø127

Regulating Wheel speed

10~300 R.P.M. (Variable)

10~300 R.P.M. (Variable)

10~300 R.P.M. (Variable)

10~300 R.P.M. (Variable)

Regulating Wheel motor / S series

3.0 KW servo motor

3.0 KW servo motor

3.5 KW servo motor

3.5 KW servo motor

Regulating Wheel tilt angle

+5° ~ -3°

+5° ~ -3°

+5° ~ -3°

+5° ~ -3°

Regulating Wheel swivel angle

±5°

±5°

±5°

±5°

Handwheel Graduation

       

Upper slide feed graduation

3.5 mm/rev.   0.05 mm/graduation

3.5 mm/rev.   0.05 mm/graduation

3.5 mm/rev.   0.05 mm/graduation

3.5 mm/rev.  0.05 mm/graduation

Upper slide micro-feed graduation

0.1 mm/rev.   0.001 mm/graduation

0.1 mm/rev.   0.001 mm/graduation

0.1 mm/rev.   0.001 mm/graduation

0.1 mm/rev.  0.001 mm/graduation

Lower slide feed graduation

9 mm/rev.  0.05 mm/graduation

9 mm/rev.  0.05 mm/graduation

9 mm/rev.  0.05 mm/graduation

9 mm/rev. 0.05 mm/graduation

Trimming device graduation

2 mm/rev.   0.01 mm/graduation

2 mm/rev.   0.01 mm/graduation

2 mm/rev.   0.01 mm/graduation

2 mm/rev.  0.01 mm/graduation

Drive Motors

       

Hydraulic pump motor

1 HP x 4P

1 HP x 4P

1 HP x 4P

1 HP x 4P

Coolant pump motor

1/4 HP x 2P

1/4 HP x 2P

1/4 HP x 2P

1/4 HP x 2P

Machine Dimensions

2200 x 1840 x 1530 mm

2200 x 1840 x 1530 mm

2350 x 1950 x 1530 mm

2200 x 1900 x 1530 mm

Net weight

3000 kg

3000 kg

3500 kg

3600 kg

Gross weight

3300 kg

3300 kg

3800 kg

3900 kg

Packing dimensions

2450 x 1940 x 1900 mm

2280 x 1940 x 1850 mm

2690 x 2100 x 1900 mm

2690 x 2100 x 1900 mm

Standard Accessories:

1. Regulating wheel and flange (1 set) (mounted on machine)
2. Grinding wheel and flange (1 set) (mounted on machine)
3. Infeed work rest and carbide blade (1 set)
4. Thrufeed work rest and carbide blade (1 set)
5. Standard electric equipment (1 set) (mounted on machine)
6. Oil tank (1 set) (ind. Oil cooling fan)
7. Standard coolant system (1 set)
8. Diamond tools (2 pcs) (mounted on machine)
9. Work lamp (1 set) (mounted on machine)
10. Tool box and Tools (1 set)

Optional Accessories:

1. Wheel balancing stand and arbor
2. Automatic infeed attachment
3. Manual feeder for infeed grinding (up and down)
4. Hydraulic work ejector (infeed grinding)
5. Automatic loading attachment (thrufeed grinding) (Ø5-20 mm, L100-600 mm)
6. Automatic feeder for thrufeed grinding (hopper type) (Ø2-8 mm, L50-180 mm)
7. Automatic unloading attachment (thrufeed grinding)
8. V Type Supporter for long bar grinding
9. Profile grinding attachment
10. Magnetic coolant separator
11. Magnetic with paper filter
12. Hydrocyclone coolant separator
13. Auto. Loading and unloading attachment (infeed grinding)
14. Vibratory feeder (thrufeed grinding)
15. Large work rest (thrufeed grinding) L:250 – 500 mm