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Promach Machinery Sdn Bhd
45, Jalan Mutiara Emas 5/16,
Taman Mount Austin,
81100 Johor Bahru,
Johor, Malaysia.
+607-3528355

 +607-3529355
+607-3525355

Our Products

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Features :

  • 1 Stable and Rigid Spindle Head
  • (1) The spindle runs on precision bearings, assuring maximum spindle stability. It guarantees outstanding accuracy for external and internal diameter grinding and face grinding.
  • (2)The spindle head swivels +90°~-30°.
  • (3)The spindle head on the 20 series machines provides variable speed changed by frequency inverter.
  • (4)The spindle head on the 32 and 42 series is driven by servomotor, providing variable speed.
  • 2 Precision Wheel Head
  • (1) The grinding wheel spindle is precision machined from high quality alloy steel SNCM-220, normalized, tempered, carburized and sub-zero treated, precision ground and mirror-effect treated. Hardness reaches to over HRC 62°. No deformation, maximum wear resistance and lifetime accuracy are assured.
  • 3. Special Hydrostatic Bearing
  • (1) 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.
  • 4. Advanced Hydrostatic Lubrication System
  • (1) The slideways of the table and the wheel head are lubricated by an advanced automatic hydrostatical lubrication system. This provides various features, such as extremely smooth movement, added feed accuracy and superior grinding accuracy.

Specifications:

SPECIFICATIONS GU20 x 40S
Capacity  
Distance Between Centers 400 mm
Swivel Over Table 200 mm
Max.Load of Centers 60 kg
Max. External Grinding Diameter 160 mm
Wheel Head  
Swivel Angle ±30°
Manual Distance 135 mm
Auto Rapid Advance 25 mm
Sliding Seat Supplementary Displacement 95 (total 255 mm)
Min. Setting Unit 0.001 mm
One Turn of Handwheel (graduation) 2 (0.005) mm
NC Feed Range 0 ~ 99 mm
Grinding Wheel  
O.D x Width x I.D 305 x 38 x 127
Speeds (belt-type) r.p.m 2085 / 2495
Work Spindle Head  
Swivel Angle 120° (+90° , -30°)
Center Taper MT : 3
Spindle Speeds (variable) .r.p.m 16 ~ 450
Max. Load of Spindle (tool holder includer) 15 kg (Max length : 100 mm)
Tailstock  
Center Taper MT:3
Stroeke 20 mm
Table  
Swivel Angle -3°, +12°
Traverse Speed 50 ~ 4000 mm/min
Auto. Reciprocate Min. Stroke 8 mm
Feed of One Turn of Handwheel (2-step) 20 mm (2mm)
Motor  
Wheel Spindel 2.1 kw (4P)
Workhead Spindle 0.75 kw (4P) (Inverter)
Hydraulic Pump 0.75 kw (6P)
Wheel Spindel Lubrication Pump 0.18 kw (2P)
Coolant Pump 0.18 kw (2P)
Internal Grinding Spindle 0.375 kw (2P)
Tank Capacity  
Wheel Spindle Lubricant Tank 12 L
Hydraulic Fluid Tank 65 L
Coolant Tank 100 L
Machine Weight  
kgs 2000 kg

Standard Accessories:

1. Grinding Wheel and Flange (1 set)
2. Diamond Tool Holder (Table mounted type) (1 pc)
3. Tool and Kits (1 set)
4. Carbide Tipped Work Centers (2 pcs)
5. Coolant Equipment (1 set)
6. Hydraulic Pump with Tank (1 set)
7. Work Lamp (1 pc)

Optional Accessories:

1. Internal grinding attachment (including 3-jaw chuck and one spindle)
2. Diamond tool holder for internal and external grinding wheel dressing (upward open type)
3. Diamond tool holder (Tailstock mounted type)
4. Diamond tool holder for internal and external grinding wheel dressing (sideward open type)
5. Angle trimming device
6. Radius trimming device
7. Cam locked driving dogs (6 pcs/set)
8. Work steady rest (2 pcs/set)
9. 2-point steady rest
10. 3-point steady rest
11. Adjustable 3-jaw scroll chuck
12. Adjustable 4-jaw scroll chuck
13. Magnetic coolant separator
14. Magnetic with paper filter
15. Wheel forming device for NC model (Manual No auto. compensation)
16. Wheel forming device for NC model (Auto. Compensation)
17. Wheel balancing stand and arbor