Cylindrical grinders
Max. grinding OD 320mm, ID 100mm universal cylindrical grinder

  1. This model UCG320 external/internal unviersal cylindrical grinding machine features a simple and compact structure, T-shaped layout, and eacy operations. It is a general-purpose grinding machine used for grinding external/internal cylindrical/tapered surfaces on axisymmetrical workpieces. This model of external/internal universal cylindrical grinding machine is available with distances-between-centers as 1000mm, 1500mm, 2000mm, 3000mm, you can choose the right distance with the machine as per the workpieces to be ground. Due to its easy operations and efficiency on performance and productivity, this universal cylindrical grinding machine is widely used in the single-piece, samll-batch or mass production in workshops;
  2. This universal cylindrical grinding machine consists mainly of the work head, the tailstock, the grinding wheel head, the internal grinding attachment, the worktable, the cross feeding mechanism, the hydraulic system, the cooling system, the lubrication system and the electrical system;
  3. Heavy machine bed on this cylindrical grinding machine provides a rigid base to support all the units and features high stiffness and adequate length to support the worktable on all positions;
  4. The work head is usually located at the left end of the worktable but can also be moved to any desired positions along the longitudinal direction on the worktable. It swivels on an infinitely adjustable scale from 0 degree to counter-clockwise 90 degrees to grind concial surfaces on the workpieces;
  5. A variable-frequency motor is mounted on the work head to drive the spindle, thus the spindle speeds can be conveniently adjusted through operating the variable-frequency converter which drives the spindle motor. A tailstock mounted on the worktable holds the workpieces with the work head. It moves and locates on any position along the worktable;
  6. The worktable longitudinal movements can be actuated steplessly at variable speeds by the hydraulic forces or be driven with hand wheel. It swivels anticlockwise up to 7 degrees and clockwise up to 3 degrees. It consists of the upper table and the lower table. On the guideways of the lower table, there are pressured lubrication cavities which receive lubrication oil to slightly float up the table and lubricates its guideways so that the friction on guideways can be eliminated;
  7. The cross feeds of the grinding wheel head can be hydraulically driven to perform micro feeds and rapid traverses. It can also be manually driven with the hand wheel to perform coarse feeds and fine feeds.


Grinding performance accuracy:
External grinding roundness: ≤0.0025 mm
External grinding cylindricity: ≤0.008 mm
Internal grinding roundness: ≤0.0025 mm
Internal grinding cylindricity: ≤0.01 mm
Grinding surface roughness: Ra≤0.2 μm


Standard accessories:
 1. 3-Jaw self-centering chuck, OD 200mm, c/w revisible jaws;
 2. Open-type steady rest;
 3. Carbide tipped center, MT #4;
 4. Internal grinding attachment, 10000 RPM speed;
 5. External grinding wheel, OD400 x Width50 x ID203;
 6. Internal grinding wheel, OD35 x Width25 x ID10;
 7. Grinding wheel pressing plate;
 8. Grinding wheel periphery dresser;
 9. Grinding wheel balancing mandrel;
 10. Grinding wheel detaching wrench;
 11. Measuring bridge plate;
 12. Machine leveling pads;
 13. Driving rod and lathe dog;
 14. Coolant system.


Optional accessories:
1. Grinding wheel balancing stand;
2. Magnetic separator;
3. Center grinding attachment;
4. Close-type steady rest;
5. End wheel dresser;
6. Radius wheel dresser.


Specifications  Unit   Models 
 UCG320X1000  UCG320X1500   UCG320X2000   UCG320X3000
 GENERAL CAPACITY
 Distance between centers  mm   1000   1500    2000   3000 
 Center height  mm   180       180  180  180
 Diameter ground (OD)  mm  8 - 320  8 - 320  8 - 320  8 - 320
 Diameter ground (ID)  mm   30 - 100   30 - 100   30 - 100   30 - 100 
 Maximum length ground (OD)  mm   1000   1500   2000   3000 
 Maximum length ground (ID)  mm  125  125  125  125
 Maximum weight of workpiece  KG  150   150  150  150
 WORK HEAD
 Swivel angle  Degrees   CCW 90  CCW 90   CCW 90   CCW 90 
 Center taper  MT   #4  #4   #4   #4 
 Spindle speed  RPM  50Hz: 25 - 220
 60Hz: 30 - 364
 50Hz: 25 - 220  
 60Hz: 30 - 364
 50Hz: 25 - 220
 60Hz: 30 - 364
 50Hz: 25 - 220
 60Hz: 30 - 364
 GRINDING WHEEL HEAD
 Wheel spindle speed  RPM   1670  1670   1670    1670 
 Wheel rapid traverse travel  mm  50  50  50  50
 Maximum travel of wheel  mm   246    246  205  205
 Swivel angle  Degrees   ± 30
 ± 30   +10  +10
 Feed per handwheel revolution          mm  Rough: 2.0
 Fine: 0.5
 Rough: 2.0
 Fine: 0.5
 Rough: 2.0
 Fine: 0.5
 Rough: 2.0
 Fine: 0.5
 Feed per graduation on handwheel scale   mm  Rough: 0.01
 Fine: 0.0025
 Rough: 0.01
 Fine: 0.0025
 Rough: 0.01
 Fine: 0.0025
 Rough: 0.01
 Fine: 0.0025
 Max. grinding wheel (OD x Width x ID)  mm   400 x 50 x 203  400 x 50 x 203  400 x 50 x 203  400 x 50 x 203
 INTERNAL GRINDING ATTACHMENT
 Spindle speed  RPM  10000  10000  10000  10000
 Grinding wheel (OD x Width x ID)  mm  Max. 50 x 25 x 13
 Min. 17 x 20 x 6
 Max. 50 x 25 x 13
 Min. 17 x 20 x 6
 Max. 50 x 25 x 13
 Min. 17 x 20 x 6
 Max. 50 x 25 x 13
 Min. 17 x 20 x 6
 WORKTABLE
 Feed per hand wheel revolution  mm   6  6  6  6
 Maximum swivel angle  Degrees   Clockwise: 3
 Anti-clockwise: 7
 Clockwise: 3
 Anti-clockwise: 6
 Clockwise: 2
 Anti-clockwise: 5
 Clockwise: 2
 Anti-clockwise: 3
 Longitudinal rapid traverse speed  mm/Minute  10 - 4000  10 - 4000  10 - 4000  10 - 4000
 TAILSTOCK          
 Center taper  MT   #4  #4  #4  #4
 Quill travel  mm  30  30  30  30
 MOTORS
 Grinding wheel head motor  KW  5.5  5.5  5.5  5.5
 Internal grinding attachment motor  KW  1.1  1.1  1.1   1.1 
 Work head motor  KW  1.5  1.5   1.5   1.5 
 MACHINE SIZES AND WEIGHTS
 Net weight  KG  3700   4300  6600  7200
 Gross weight  KG   4000   4600   6900   7500  
 Packing size  mm   3200 x 2000 x 2050   4200 x 2000 x 2050   5400 x 2000 x2 050   7390 x 2000 x 2050 


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