Palmary PC-18/1810/20 Centerless Grinders | Machine Tool Supply

Specifications

Palmary PC-18/1810/20 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) Slideways 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-18	PC-1810	PC-20
Grinding Wheel
Standard grinding range (Dia.)	Ø1~Ø80 mm	Ø1~Ø80 mm	Ø1~Ø80 mm
Capacity increases with special arrangement	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	Ø510 x 205 x Ø304.8
Grinding wheel speed	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
Regulating Wheel
Regulating Wheel size (O.D. x width x I.D.)	Ø255 x 205 x Ø111.2	Ø255 x 255 x Ø111.2	Ø305 x 205 x Ø127
Regulating Wheel speed	13~308 R.P.M. (Variable)	13~308 R.P.M. (Variable)	13~308 R.P.M. (Variable)
Regulating Wheel motor	2 HP x 6P	2 HP x 6P	3 HP x 6P
Regulating Wheel tilt angle	+5° ~ -3°	+5° ~ -3°	+5° ~ -3°
Regulating Wheel swivel angle	±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
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
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
Lower slide micro-feed graduation	0.2 mm/rev. 0.001 mm/graduation	0.2 mm/rev. 0.001 mm/graduation	0.2 mm/rev. 0.001 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
Drive Motors
Hydraulic pump motor	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
Machine Dimensions	2200 x 1840 x 1530 mm	2200 x 1840 x 1530 mm	2200 x 1900 x 1530 mm
Net weight	2900 kgs	3000 kgs	3700 kgs
Gross weight	3200 kgs	3300 kgs	4000 kgs
Packing dimensions	2280 x 1940 x 1850 mm	2280 x 1940 x 1850 mm	2280 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