Universal thread measuring machine SJ5200
  • Item No.: SJ5200
    Product name: Universal thread measuring machine
    Inside measuring range: 2.5~150mm
    Outside measuring range: 1.0~160mm
    Resolution: 0.01μm
    Max measuring length: 60mm
    Min thread pitch: 0.1mm
    Measuring force range: 0.01 ~ 0.07N
    Application: Measure all parameters of plug or ring gauge in 2 min.
    Manufacturer: Chotest Technology Inc.



§≡≡≡≡   Functions   ≡≡≡≡
1. Full-automatic measurement for comprehensive parameters of cylindrical thread plug gauges, cylindrical thread ring gauges, taper thread plug gauges, taper thread ring gauges, plain ring gauges, plain plug gauges and other gauges with internal & external dimensions, including virtual pitch diameter , single pitch diameter, basic pitch diameter, major diameter, minor diameter, thread pitch, thread angle, half of thread angle, flank straightness, lead angle, taper, etc.
2. Can measure trapezoidal thread gauges, buttress thread gauges, sawtooth thread gauges and other large-slope thread gauges.
3. Can measure comprehensive parameters of single thread and multiple thread.
4. Measure various thread gauges according to GB, ISO, BS, ANSI, DIN, JIS, API standards. With comprehensive and professional thread standards in database, it meets requirements of most customers.
5. Automatically generate test report according to selected standard.
6. After once measurement, the software can records various parameters of thread and display data of any position, in addition it generates the thread curve, relevant parameters and analysis chart automatically.
7. Measuring probe and workholder are identified automatically, which avoids collision of measuring probe caused by misoperation.
8. One-sided or two-sided measurement and analysis for gauges.
9. Controller for measuring pin positioning: with an easy-to-use buttons control box, the operation is more flexible.
10. User-friendly English software system and simple & convenient operation.
11. Test results are saved automatically with name of measuring series number + size of measuring gauge + type of measuring gauge, which can be recognized easily. With centralized database management for measuring records, the user can query and manage the measuring records according to object type, testing institution, manufacturing number, inspector, submitted institution, equipment number, inspection date, effective date, etc.
12. Can print multiple selected test records or test certificates from database at once time.
13. Can export test data to Word, Excel, AutoCAD (optional) files.
14. Data backup and restore.
15. Output reports in a variety of formats in Word or PDF, particularly the format can be customized. 
16. Support user-defined standards.


§≡≡≡≡      Photo     ≡≡≡≡



§≡≡≡≡  Parameters ≡≡≡≡

Item No SJ5200-60 SJ5200-100 SJ5200-160 
Outside meas.range (1.0-50)mm (1.0-90)mm (1.0-150)mm
Inside meas.range (2.5-60)mm (2.5-100)mm (2.5-160)mm
Max measuring length 60mm 60mm 60mm
Min thread pitch 0.1mm 0.1mm 0.1mm
Weight 200kg 250kg 300kg
Dimension(cm) 100×45×100 100×45×100 100×45×113  
Measuring uncertainty:
 Cylindrical or Taper thread ring gauge(Minor diameter>2.5mm,half of thread angle≥27°)
Minor diameter (2.5 + L/200)μm (3.0 + L/200)μm (3.0 + L/200)μm
  Actual pitch diameter (2.5 + L/200)μm (3.0 + L/200)μm (3.0 + L/200)μm
Thread pitch (0.75 + L/200)μm (0.75 + L/200)μm (0.75 + L/200)μm
Cylindrical or Taper thread plug gauge(Major diameter>1mm,half of thread angle≥27°)
Major diameter (2.0 + L/200)μm (2.5 + L/200)μm (2.5 + L/200)μm
Actual pitch diameter (2.0 + L/200)μm (2.5 + L/200)μm (2.5 + L/200)μm
Thread pitch (0.75 + L/200)μm (0.75 + L/200)μm (0.75 + L/200)μm
Plain cylindrical or Taper gauge(Diameter>10mm)
Plain ring gauge (1.0 + L/200)μm (1.5 + L/200)μm (1.5 + L/200)μm
Plain plug gauge (1.0 + L/200)μm (1.5 + L/200)μm (1.5 + L/200)μm
Plain cylindrical or Taper gauge(Diameter from 1mm to 10mm)
Plain ring gauge (1.5 + L/200)μm (2.0 + L/200)μm (2.0 + L/200)μm
Plain plug gauge (1.5 + L/200)μm (2.0 + L/200)μm (2.0 + L/200)μm
Measuring system Heidenhain incremental linear encoder system
Resolution 0.01μm
Horizontal guidance Precision air bearing
Driving type Servo motor
Meas. force system Automated control by computer
Computer Desktop computer with 24" monitor
Pressure supply 0.6MPa without water and oil
Input voltage

220V 50~60Hz


§≡≡≡≡  Description ≡≡≡≡

SJ5200 achieves full-automated and precision measurement of comprehensive thread parameters by using precision linear encoder system, precision air bearing driving system, high-end servo motor control system, high performance industrial computer control system and large capacity memory technology. After driving the measuring probe to contact with workpiece by precision air bearing system, the software records the horizontal and vertical coordinates in measuring process by applying precision linear encoder system, then, on the basis of synthesizing the two-dimensional measuring values, the software calculates and obtains a variety of thread parameters according to relevant definitions from norms.
SJ5200 is a full-automated measuring machine. The operator only needs to install the thread gauge, select matching standard and input scanning length in software, then the system measures automatically after click the "start" button. The software displays real-time tooth profile curve of thread gauge, and calculate the major diameter, pitch diameter, minor diameter, thread pitch, thread angle, other thread parameters automatically. Finally the system qualifies a variety of thread parameters according to selected thread norm, and test report is generated automatically. The whole process is completed in 2 min.


§≡≡≡≡    Features   ≡≡≡≡

1. Full-automated measurement: Scan test objects and display all values in 2 minutes without manual intervention and calculation. According to selected thread standards, the system generates the test report finally. That significantly simplifies the operator's work, as well as improves the measuring efficiency, quality and accuracy. 
2. Resolution is 0.01um; High accuracy, high stability and high repeatability.
3.Simple, humanized design: Thanks to quick workholders for thread, object installation is very simple and easy. Due to user-friendly software interface, the operator can be trained to use it within a few minutes. Operation of the machine is extremely simple.
4. 3D navigation function(Patent No.1): Greatly improve the operating convenience, accuracy, safety and reliability.
5. Convenient and accurate replacement of measuring pin(Patent No.2): Thanks to innovative structure for probe installation, the probe is fixed easily and simply. This structure eliminates errors caused by repeated installation, which guarantees excellent repeatability.
6.Combined workholder(Patent No.3): Thanks to two-in-one and three-in-one workholders, gaskets and heel blocks are not required. These workholders can be used for measuring both thread ring and plug gauges, which makes work more simple and efficient, moreover reduces risk of misoperation.
7. Ingenious balancing mechanism(Patent No.4): Thanks to ingenious balancing mechanism, the problem of Z-axis swing while X-axis movement is solved completely, which ensures the stability of the coordinate system during scanning, consequently measuring accuracy is improved.
8. Accurate & sensitive measuring force system 
Measuring force automatically varies from 0.01 ~ 0.10N according to different gradient during scanning. Thanks to micro measuring force, measuring pin is almost abrasion-free, so lifespan of probe is very long, in addition test objects are protected as well. The micro measuring force also greatly helps to achieve measurements for steep-slope thread gauges.


§≡≡≡≡  Applications  ≡≡≡≡

Can measure:

Thread plug gauge

Shell thread plug gauge

Thread ring gauge

Shell thread ring gauge

American Standard unified thread gauge

55 ° non-sealing pipe thread plug gauge

55 ° non-sealing pipe thread ring gauge

Thread sealing pipe thread with Regulation (RB)

Wei's taper pipe thread gauges

Brunel taper pipe thread gauges

ACME taper pipe thread gauge

DIN thread gauge

JIS thread gauge

Special thread gauges for gas cylinders

ACME cylinder pipe thread gauge


API SPEC 5B series gauge:

Oil pipe thread gauge

Oil pipe taper gauge

Oil pipe taper master gauge

Oil casing thread gauge

Oil casing taper gauge

Oil casing taper master gauge

Oil pipeline gauge


API SPEC7-2 series gauge:

Numeric oil drill pipe joint thread gauge

Numeric oil drill pipe joint thread master gauge

Regular type oil drill pipe joint thread gauge

Regular type oil drill pipe joint thread master gauge

Full bore type oil drill pipe joint thread gauge

Full bore type oil drill pipe joint thread master gauge


API SPEC 11B series gauge:

Rod thread gauge

Double pin plug gauge

Double taper plug gauge

Incompetence plain plug gauge

Plain master ring gauge

Trapezoidal thread plug gauge



§≡≡≡≡      Package    ≡≡≡≡



§≡≡≡≡ Configuration ≡≡≡≡

Standard configuration

1. SJ5200 host machine                                                
2. Workholders                                                              
3. Measuring probes group  
4. Standard thread gauges                                            
5. Standard plain ring gauges                                         
6. Standard plain plug gauges                                        
7. Built-in regulations and standards                             
8. Testing software                                                         
9. Desktop computer                                                      
10. HP color laser printer                                               
11. Aluminum ally case for accessories 
12. User manual                                                            
13. Product certification and warranty card                   
Optional configuration
1. Software module for trapezoidal thread
2. Software module for buttress thread 
3. Measuring probes for trapezoidal thread
4. Measuring tips with spherical face
5. Other workholders                                                      
6. Water-free, oil-free, silent pressure supply system
7. Electronic moistureproof case                                   
8. Marble work table                                                      

9. Summer or winter laboratory uniform


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