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HRG-400

HRG-400

Horizontal Spindle & Round Table Grinder



Model: HRG-400

Table diameter: 400mm
Grinding area: Φ400x140mm
Table speed: 0-180r/min

Wheelhead spindle speed: 2850r/min

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Product Description

Horizontal Spindle & Round Table Grinder



Model: HRG-400

Table diameter: 400mm
Grinding area: Φ400x140mm
Table speed: 0-180r/min

Wheelhead spindle speed: 2850r/min



Technical Specification


Model

Unit

HRG-400

HRG-500

HRG-630

Worktable diameter

mm

Φ400

Φ500

Φ630

Max. grinding size of workpiece

mm

Φ400x140

Φ500x255

Φ630x255

Adjustable angle of worktable

°

±3°

±3°

±3°

Worktable speed (stepless)

rpm

0-180

0-70

0-70

Longitudinal feed speed of carriage(stepless)

m/min

0.1-2.5

0.1-2.0

0.1-2.0

Longitudinal travel of carriage

mm

240

310

345

Roughness

um

Ra0.4

Ra0.4

Ra0.4

Flatness

mm

0.01/1000

0.01/1000

0.01/1000

Quick lifting speed of grinding head

mm/min

175

175

175

Automatic feeds of grinding head (steps)

mm

0.0025-0.02 (6)

0.0025-0.02 (6)

0.0025-0.02 (6)

Vertical travel of grinding head

mm

170

325

325

Power of head

kw

5.5/4.5(double speed motor)

7.5

7.5

Grinding head spindle speed

rpm

2800/1450(high/low speed)

1450

1450

Size of grinding wheel

mm

Φ400x40xΦ203

Φ400x40xΦ203

Φ400x40xΦ203

Total power

kw

11

13

13

Overall dimensions (LxWxH)

mm

1623x986x1730

2100x1365x1863

2100x1365x1863

Net weight (approx)

kg

3400

4000

4100






Product Details


  • This grinder is mainly applicable for grounding processing of disc-shaped parts,circular cutter,bearing collar.piston ring,index plate, circular guide rail,friction plate.saw blades,valves,gears and other circular cutters and gauges.

  • This grinder can be widely used by the manufactures of tools,bearings,values,gears,auto parts.semi-conductors,optical elements and other engineering works for grinding processing of precision components.

  • The grinder is made into pillar-carriage structure and realizes grinding through the grinding wheel rim. Due to this design, high machining precision can be realized; especially that the disc-shaped parts processed may have the same concentric circle planarity and relatively high surface roughness can be realized.

  • Designed with compact structure and rational layout, the grinder takes up small land area.

  • The grinder body is made into double-layer-wall structure,with consistent temperature rise at the four sides so that to avoid thermal reformation and thus enhance the rigidity and rigidity and realize good stability.

  • Guide rail of the grinder body is designed into open static pressure one-flat-one-V structure which guarantees stable running ,high shock absorption,less mechanical wear and long service life.The table moves stably on the guide rail,with uniform stress and high movement precision.

  • At the time of machining,the round table rotates and starts reciprocating feed movement in the vertical direction along with the carriage with the machining efficiency times higher than that of the rectangular surface grinder. 

  • The round table can swivel ±3°, in order to grind the internal and external cones.

  • The circular table is designed with open-type static-pressure guide rails, and driven by the AC variable frequency motor.

  • The grinding head feeds vertically through the quill roller steel guide to adjust pertension force, which guarantees the easy movement of guide ad zero gap fit and finally guarantee the precision and stability of grinding feed. In addition, the grinder is equipped with quick lifting device.

  • The main spindle of the grinding head is made into dynamic-static-pressure bearing bush supporting structure and is driven directly by the built-in motor, together with a stand-alone forced cooling oil tank, which may realize low temperature rise and high precision of rotation.

  • The feed system of the grinder is designed with functions including automatic feed, zero stop, sparking out, automatic stop and automatic demagnetization grinding and the automatic circulating device. 

  • Magnetic force of the electromagnetic chuck is adjustable, in order to make convenient to grind thin-wall quenched parts with weak magnetic force. 

  • Movement of the table is driven by the hydraulic cylinder,with step-less speed regulation and stable running.






Standard Accessories


  • Grinding wheel

  • Wheel flange

  • Electromagnetic chuck

  • Wheel extractor

  • Wheel dresser

  • Working lamp

  • Coolant tank

  • Leveling wedge and bolts

  • Tools and tool box

  • Operation manual in English






Optional Accessories


  • Wheel balancing stand

  • Magnetic separator & paper filter



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