Profile measuring machine SJ5718-PR
  • Item No.: SJ5718-PR
    Product name: Profile measuring machine
    X-axis measuring range: 0~100mm
    X-axis indication error: ±(0.6+0.02L/100)µm
    Z1-axis measuring range: ±30mm
    Z1-axis resolution: 0.1μm
    Z1-axis indication error: ±(0.6+|5H|/100)µm 
    Scanning speed:  0.05~5mm/s adjustable
    Manufacturer: Chotest Technology Inc.




1. Surface contour evaluation: It can evaluate radius, angle, distance, coordinates, circle, circular cross section, and determine the points, each intersectant point, coordinate axis, straight line, vertical line, circle and circular cross section, and analyze the straightness, roundness of contour; More functions:   (1)Establish a regression line and a circle  (2)Establish the points, intersectant points, free points, center point, the highest point and the lowest point  (3)Establish the coordinate system  (4)Calculate the radius, distance, angle, coordinates and linear deviation  (5)Compare actual value with nominal value  (6)The measurement program runs automatically 2. CNC Automatic mode is supported; SPC statistics and analysis are supported 3. Support to import CAD file and annotate CAD profile. 4. Support to import PDF profile data. 5. Can export test data to the Word, Excel, AutoCAD(Optional) 6. Output multiple kinds of report format, and support user-defined report, or customize report(optional) 7. Can query and manage the test records according to object type, manufacturer, manufacturing number, inspector, submitted institution, equipment number, inspection date or effective date etc. 8. Can print multiple selected test records or test certificates from database at once time 9. User-friendly software 10. Data backup and restore



Model No. SJ5718-PR
Travel Range X 0~100mm
Z 0~300mm
Size(L×W×H) 600×350×890mm
Weight 115Kg
Profile Measurement(SJ5718-P)
Measuring Range Z1 ±30mm
Resolution 0.001um
Indication Error X ±(0.6+0.02L)μm(L ,mm)
Z1 ±(0.6+0.05H)μm(H ,mm)
Standard Ball ≤±(1.2+R/15)μm(R ,mm)
Angle error ≤±1′
Moving speed X 0~20mm/s
Z 0~20mm/s
Scanning Speed 0.05~5mm/s
Max Slope Uphill 77°, downhill 88°
Straightness ≤0.5μm/100mm
Scanning Force 30mN  adjustable
Roughness Measurement(SJ5718-R)
Measuring Range Z0 ±400µm(Optional:±1000μm)
Sensor Type Railless
Ra Range Ra0.1μm~Ra64μm
Scanning Force 1mN
Resolution Z0 0.001um
Indication Error ≤±(5nm+2.5%A)μm, A(Ra)μm
Repeatablity ≤1nm
Scanning Speed 0.05~0.5mm/s
Measurement Residual ≤0.005μm
Roughness Parameters R Roughness: Rp,Rv,Rz,Rc,Rt,Ra,Rq,Rsk,Rku,RSm,RPc,Rdq,  Rdc,Rmr,Rmax, Rpm,tp,Htp,Pc,Rda,Ry,Sm,S,Rpc,RzJ;
Key roughness: Rcore: Rk,Rpk,Rvk,Rpkx,Rvkx,Mr1,Mr2,A1,A2,Vo;
Profile: Pa,Pq,Pt,Pz,Pp,Pv,PSm,Psk,Pku,Pdq,Pdc,Pc,PPc,Pmr,Rad,PzJ,Pmax;
Waviness of Profile: Wa,Wq,Wt,Wz,Wp,Wv,WSm,Wsk,Wku,Wdq,Wdc, Wmr,Wpc,Wc;
Motif: R,AR,W,AW,Rx,Wx,Wte;
Filter 2RC filtering, Gaussian filtering and Zero phase filtering
Sampling Length 0.008, 0.08, 0.25, 0.8, 2.5, 8.0 or 25mm Selectable
Evaluation Length Auto calculation
Film Thickness
Measuring Range 60μm or less
Measuring Accuracy 2%H(H is measuring height in μm)


1. High precision, high stability, high repeatability: fully meet the measurement requirements of test object.   1)The world's leading high-precision linear encoder system and high-precision inductance measurement system;   2)High-precision grinding rail is made of good material with high wear resistance.   3)High-performance linear motor driving system 2. Intelligent measurement software Thanks to friendly software interface, the operator can grasp the basic operation of the machine. 3. Measuring force Measuring force controlled by voice coil motor driving system is continuously adjustable from 10mN to 150mN, and the resolution of measuring force is 0.2mN; 4. Intelligent protection system Once the measuring probe collides with test object / workholder, or tensile force to measuring probe is too large during scanning process, the machine will stop scanning in order to protect measuring probe and measuring system. 5. Flexible manual control The machine is equipped with a joystick, which can be used to position the probe before measurement. The operator can control the measuring probe to move up and down, left and right quickly without the computer.


Mechanical part

Metallurgy part

Car wheel

Die casting part


Thread part

Battery housing

Phone housing

Machining part

Gearbox pulley

                                                                  Scanning curve of Profile


Standard configuration: 

1. Host machine

2. Calibration gauges 3. Measuring probe 4. Jaw vice 5. Object table 6. Measuring software 7. Desktop computer and 24” monitor 8. Portable joystick 9. Aluminium alloy suitcase for accessories 10. User manual 11. Product certification and Warranty card


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