GU42x150NC

Introduction

PALMARY high precision cylindrical grinders are unmatched in structural rigidity and stability, grinding accuracy and operational convenience. Each machine provides maximum operational flexibility thereby allowing for various grinding operations. You will get extra value when putting a PALMARY cylindrical grinder on your production line.

Features

  • Stable and rigid spindle head

    The spindle runs on precision bearings, assuring maximum spindle stability. It guarantees outstanding grinding accuracy for external dia., internal dia. (optional) & end face.
  • Precision wheel head

    The grinding wheel spindle is precision machined from high quality alloy steel, normalized, tempered, carburized and sub-zero treated, precision ground and mirror-effect treated.
  • Special hydrostatic bearing

    The wheel spindle runs by using a special hydrostatic bearing and is especially ideal for precision grinding work. It features high speed, no friction between metals, no heat generation, deformation-free, extra high accuracy and continual use.
  • Various grinding application

    One grinder allows straight plunge grinding, shoulder grinding, traverse grinding, end face grinding, taper grinding & internal grinding (optional) functions for different machining purpose.

MODEL SPECIFICATIONS

GU42x150NC  
Capacity  
Distance between centers 1500 mm
Swivel over table Ø420 mm
Max. load of centers 150 kg
Max. external grinding diameter Ø400 mm
Wheel head  
Swivel angle ±30°
Manual distance 160 mm
Auto rapid advance 40 mm
Sliding seat supplementary displacement 95 (total 295) mm
Min. setting unit 0.001 mm
One turn of handwheel (graduation) 2 (0.005) mm
Grinding wheel  
O.D. x width x I.D. Ø405 x 50 x Ø127 mm
Speed (belt-type) 1783 r.p.m. (50 Hz) / 1940 r.p.m. (60 Hz)
Work spindle head  
Swivel angle 120° (+90°, -30°)
Center taper MT. 4
Spindle speed (variable) 10~300 r.p.m.
Max. load of spindle (tool holder included) 35 kg (max. length : 150 mm)
Tailstock  
Center taper MT. 4
Stroke 25 mm
Table  
Swivel angle -3° ~ +7°
Traverse speed 50 / 5400 mm/min
Auto. reciprocate min. stroke 8 mm
Feed of one turn of handwheel (2-step) 20 mm (2 mm)
Motor  
Wheel spindle  3.7 kW (4 P)
Workhead spindle 2.0 kW
Hydraulic pump 0.37 kW (4 P)
Wheel spindle lubrication pump 0.18 kW (4 P)
Coolant pump 0.18 kW (2 P)
Internal grinding spindle (opt.) 0.75 kW (2 P)
Tank  
Wheel spindle lubrication tank 9 L
Hydraulic tank 46 L
Coolant tank 110 L
Machine weight  
Net weight 4300 kg
The mentioned specifications & dimensions are subject to change without notice.
MACHINE DIMENSIONS    (unit: mm)

STANDARD ACCESSORIES

  • Grinding wheel and flange x 1
  • Diamond tool holder (table mounted type) x 1
  • Carbide tipped work centers x 2
  • Hydraulic system x 1
  • Coolant system x 1
  • Work lamp x 1
  • Tools and tool box x 1

OPTIONAL ACCESSORIES

  • Internal grinding attachment (included one spindle)
  • Diamond tool holder for internal and external grinding wheel dressing (upward open type)
  • Diamond tool holder (tailstock mounted type)
  • Diamond tool holder for internal and external grinding wheel dressing (sideward open type)
  • Angle trimming device
  • Radius trimming device
  • Cam locked driving dogs (6 pcs/set)
  • Work steady rest (2 pcs/set)
  • 2-point steady rest
  • 3-point steady rest
  • Adjustable 3-jaw scroll chuck
  • Adjustable 4-jaw scroll chuck
  • Magnetic coolant separator
  • Magnetic coolant separator with paper filter
  • Wheel forming device manual type (without auto. compensation)
  • Wheel balancing stand and arbor

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