Hydraulic Cyl. Grinding

Hydraulic Cylindrical Grinding Machine

TECHNICAL SPECIFICATIONS

MODEL HL 300/150 HL 500/150-U HL 800/150-U HL 1000/200 HL 1250/200 HL 1500/200
Centre height mm 150 150 150 200 200 200
Max.grinding length mm 300 500 800 1000 1250 1500
Max.swivel of table deg _+8 _+8 _+8 _+7 _+6 _+5
Table speed infinitely variable m/min 0.1 - 4 0.1 - 4 0.1 - 4 0.1 - 4 0.1 - 4 0.1 - 4
Dwell at reversals sec 0 - 60 0 - 60 0 - 60 0 - 60 0 - 60 0 - 60
Grinding Wheel(d x w) mm 300 x 25 300 x 40 300 x 40 400 x 40 400 x 40 500 x 40
Wheel head rapid approach mm 50 50 50 50 50 50
Wheel head swivel deg - -+60 -+60 - - -
No. of work head speeds 4 4 4 8 8 8
Work head swivel deg -+90 -+90 -+90 -+90 -+90 -+90
Work head centre MT 4 4 4 4 4 4
Tail stock centre MT 3 3 3 4 4 4
Internal Grinding Spindle (Optional) mm 60 x 250 60 x 250 60 x 250 80 x 250 80 x 250 80 x 250

SALIENT FEATURES

MACHINE BED

  • The machine bed is of one piece, close grained cast iron.
  • Box structure design with adequate ribs provides high rigidity and stability.

TAIL STOCK

  • Tail stock is of single piece construction for maximum rigidity.
  • Hydraulic actuation of Tail stock is offered as optional.

MACHINE GUIDEWAYS

  • Machine guideways of V-Flat construction are precisely hand scrapped.
  • The work head table as well as grinding wheel head slideways are coated with “TURCITE-B” linear bearing material which gives stick slip free movements, excellent vibration damping and high repetitive positioning accuracy.
  • Continuous automatic lubrication system provided for guideways. Centralized lubrication system is also provided, for efficient and positive lubrication of other moving parts.

AUTOMATIC GRINDING CYCLE (Optional)

  • ingle lever Automatic Plunge and Traverse grinding cycles.
  • Cycle operates as Work head & Coolant ON – Rapid approach – Auto feed – Spark off – Rapid retraction and in-feed hand wheel to starting position – Work head & Coolant OFF.
  • Amount of infeed, infeed rate and spark off time are adjustable.

WORK HEAD

  • Machine guideways of V-Flat construction are precisely hand scrapped.
  • Work head spindle can be locked for grinding between centres or it can be rotated with the driving plate to carry work holding fixtures like collet, face plate or chuck.
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HYDRAULICS

  • Hydraulic power pack with solenoid valves is housed outside the machine.
  • Extremely good thermal stability is achieved in the machine by isolating the hydraulic unit.

WORK HEAD

  • Wheel head spindle is made of special alloy steel, specially heat treated, ground and lapped to achieve high dimensional stability and long life.
  • Spindle runs in precision White Metal Bush Bearings, which give very high accuracy and excellent surface finish to the work piece.

ELECTRICALS

  • Electrical/Electronic controls are contained in separate control cabinet, outside the machine, making it moisture proof and provides easy maintenance.

INFEED SYSTEM

  • Wheel head spindle is made of special alloy steel, specially heat treated, ground and lapped to achieve high dimensional stability and long life.
  • Spindle runs in precision White Metal Bush Bearings, which give very high accuracy and excellent surface finish to the work piece.

OPTIONAL

  • Stepless variable workspeed
  • 200 mm centre height in lieu of 150 mm.
  • In-Process Guage

INFEED SYSTEM

  • In-feed system comprises of hardened and ground feed screw, which ensures high positioning accuracy and repeatability.
  • Specially designed nut having backlash adjustment is provided.
  • Automatic in-feed at table reversal.
  • Electronic hand wheel provided ( MPG ).
  • Hydraulically operated Rapid approach / Retraction of wheel head slide.

RANGE OF OTHER MACHINES

  • CNC Cylindrical Grinding Machine.
  • Centreless Grinding Machine.
  • Internal Bore/Track Grinding Machine (Hydraulic/CNC).
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