ULM SJ5100-UP600
  • Item No.: SJ5100-UP600
    Product name: Universal length measuring machine  SJ5100-UP600
    Inside measuring range: 0.7~900mm
    Outside measuring range: 0~1040mm
    Resolution: 0.01μm
    Repeatability: 0.1μm
    Max thread pitch:  250mm(Plug)/200mm(Ring)
    Measuring force range: 0.1, 0.3, 0.5, (1~10)N continuously adjustable by hand
    Manufacturer: Chotest Technology Inc.




1. Measure gauge blocks, thread gauges, plain gauges, Taper thread/plain gauges, pin gauge, caliper, spline gauges, setting bars, snap gauges, internal/external micrometers, feeler gauges, Dial indicators, dial bore gauge, dial test gauges, internal micrometer three points, etc.

2. Measure various gauges according to GB, ISO, BS, ANSI, DIN, JIS, API standards. With comprehensive and professional standards in database, it meets requirements of most customers.
3. Conform to a variety of verification regulations & measuring standards. All test results are generated according to relevant regulations and standards.
4. User-friendly software.
5.With centralized database management for measuring records, the operator can query and manage the measuring records according to object type , testing institution, manufacturing number, inspector, submitted institution, equipment number, inspection date and effective date.
6. Can print multiple selected test records or test certificates from database at once time.
7. Can export test data to Word, Excel, AutoCAD (optional) files.
8. Data backup and restore.
9.Support user-defined template of report.
10. Support user-defined program and tolerance.




Item No. SJ5100-UP300 SJ5100-UP600 SJ5100-UP1000
Absolute measurement Outside range (0~340)mm (0~640)mm (0~1040)mm
Inside range (0.7~200)mm (0.7~500)mm (0.7~900)mm
Indication error  ±(0.09+L/1500)μm
(Note: L is measured length in mm)
Repeatability (2s) 0.06μm 0.06μm 0.08μm
Resolution 0.01μm
Measuring force 0.1N, 0.3N0.5N(1~10)N continuously adjustable by hand
Max pitch diameter(mm)  200(Ring)/250(plug)  200(Ring)/250(plug) 200(Ring)/250(plug)
Dimension(mm) 1400×400×450 1400×400×450 1650×400×450
Weight(kg) 180 180 300
Five-axis object table Item No. ST-30.1
Z-axis (0-50)mm
Y-axis ±25mm
X-axis floation ±10mm
Z-axis rotation ±2.5°
Y-axis swing ±2.5°
Loading capacity >30Kg
Dimension 350mm×125mm



Thanks to precision glass-scale, precision guide rail and  precision temperature compensation unit, cooperating with different probes and workholders, SJ5100 achieves high-precision measurement of various dimensional gauges. Moreover, because straightness of precision guide rail is every small, its repeatability is excellent by applying by bidirectional constant measuring force technology. After the software records the coordinates from precision glass-scale and introduces the feedback data of measuring force device and temperature sensor, the dimensional parameters are calculated according to the relevant definitions and formulas from selected norm. The whole measurement process can be completed in 3minutes.


1.Absolute measurement:
Thanks to precision glass-scale for positioning of measuring spindle, SJ5100 can implement the precision absolute measurement over the entire range.
2.High precision and High stability:
      (1) Precision glass-scale; Resolution: 0.01μm.
      (2) Precision grinding guide rail with excellent straightness lays foundation for accuracy and stability of measurements.
      (3) Measuring values are acquired truly and accurately by using high-rigid and deformation-free measuring slider.
      (4) Thanks to marble base, the machine is protected against external vibration interference, which ensures stable and reliable working.
      (5) The headstock is very stable during travel by using compact friction driving structure.
3.Bidirectional constant measuring force:
      (1) Bidirectional constant measuring force system reduces the influence of measuring force on measured values, which helps to improve the accuracy of measurements.
      (2) Manual continuously-adjustable measuring force.
      (3) The smart sensing system of measuring force eliminates error caused by un-horizontal position of the machine and surrounding environment vibration automatically.
4. Intelligent management and measurement software system:
      (1) More than 15 years of practical experience in the design of measurement software; User-friendly software is designed for customers to operate the system fast.
      (2) Operation of the machine is simple, so the operator can be trained to use it shortly.
      (3) With built-in a variety of norms, the powerful software can process the measured data and generate various test reports automatically.
      (4) Can calculate various dimensional parameters for different gauges according to selected norm.
      (5) The operator can find the inflection point of workpiece fast and simply though the guide function of software.
5.High-performance five-axis object table:
      (1) High-performance cross-roller for rails of X, Y, Z axis: very small friction, excellent stability and large loading capacity.
      (2) Function of fine adjustment of Y-axis travel & tilt & horizontal rotation is designed for the operator to find the inflection point of each axis easily.
      (3) The software can collects data automatically from Z-axis digital dial indicator(standard) and Y-axis digital dial indicator(optional), which is used for measurements of taper thread gauges and taper plain gauges.
6.High-performance inside size measuring unit:
With this unit, SJ5100 can calibrate small ring gauges(the min thread ring gauge is as small as M3; plain ring gauge is as small as diameter ≥0.5mm). Adjustable measuring force is 0.3N~10N; Repeatability of plain ring gauge’s measurements is less than 0.1μm. 





Standard configuration

1. SJ5100 host machine      
2. ST-30.1 five-axis object table  
3. ST-S1.1 one-coordinate floating object table    
4. Measuring probes            
5. Three-wire for thread measurement
6. SF-P60.1 workholder for plug gauges     
7. SF-V1.1 V-shaped supporting block for setting bar    
8. SF-GB1.1 and SF-GB2.1 supporting fixture for gauge block  
9. ST-CL1.1 and ST-CL2.1 clamping fixture 
10. SDE-R200.1 Precision inside dimension measuring device    
11. SB-T12.1 T-shaped ruby ball probe  
12. SB-S4.1 single ruby ball probe    
13. SH-L1.1 big measuring jaw for ring gauge  
14. SH-L2.1 small measuring jaw for ring gauge  
15. Standard plain ring gauge Φ40mm   
16. Measuring software   
17. Built-in popular standards in database    
18. Desktop computer          
20. Supporting fixture DLB-200 for monitor   
21. Aluminum alloy suitcase for accessories     
22. Temperature compensation device         
23. Product certification and Warranty card    
24.  User manual 
25. Free services and repairs 

Optional configuration

1. Marble work table        
2. SDE-Z200.1 Precision inside dimension measuring device
(for internal measurement and taper thread gauge measurement)
3. SF-Z1.1 workholder for taper plain/thread ring/plug gauge 
4. Digital micrometer indicator with cable(for Taper thread/plain gauge)
5. Measuring jaw (for spline ring gauge/ outer ring of bearing)
6. Measuring cap (for spline plug gauge/ inner ring of bearing)
7. Small measuring bar for spline gauge measurement(12 pairs): 
8. Small measuring bar for bearing measurement(2 pairs)
9. T-shaped ruby ball probe(For M3, M4 thread ring gauges)
10. Single ruby ball probe(For ring gauges Φ0.7~4mm)
11. SR-H65.1: Axis raising(H=65mm ) block for measuring bar
      RH-6.5_8.0: Small measuring bar with plain face Φ8
12. Portal bubble level gauge (for five-axis object adjustment)
13. Workholder for snap gauge measurement   
14. Measuring jaw for outside micrometer 
15. Workholder and its accessories for micrometer measurement
16. Paralleled probe for outside micrometer measurement
17. Workholder and probe for dial test indicators
18. Foot pedal board for sampling

19. Electronic moistureproof cabinet   


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