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The JB-4C precision roughness meter is a high-precision stylus type surface roughness measuring instrument that can test the roughness of various parts such as flat surfaces, inclined surfaces, outer cylindrical surfaces, inner hole surfaces, deep groove surfaces, circular arc surfaces, and spherical surfaces, and measure the shape, contour, and other parameters of surface roughness. It can also measure the TP step of workpieces. The instrument is easy to use, with high measurement accuracy and stable repeatability.
The instrument is equipped with a computer and specialized measurement software, using advanced noise free mechanical positioning devices to select different positions of the measured parts, set various measurement lengths for automatic measurement, and evaluate up to 3000 sampled data points within the evaluation section. All measurement data and curves can be displayed on the screen or printed out, so they are widely used in various industries such as automotive accessories, machinery, mold processing, scientific research institutions, and colleges and universities.
The instrument complies with the national standard GB/T3505-2000, GB/T6062-2001, GB/T10610-1998, And the international standard ISO5436, Requirements of ISO11562.
technical specifications

model	JB-4C
Testing Parameters	Ra,Rz,Rt,RS,RSm,Rp,Rv,Rmax,Rq,D,Pt, Lr, Ln, RSk, R Δ q, Δ a, λ q, λ a, R3t, Rt1, Rt2, Rt3, RT4, rt5, etc., Rmr (Tp) curve
Vertical magnification of contour shapes	10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 500, 000, 200, 000, 500000 or automatic
Range of roughness measurement	Ra 0.01 – 50 µm
Sampling length	L: 0.08 ,0.25, 0.8, 2.5 mm
evaluation length	Ln: 1L, 2L, 3L, 4L, 5L optional
Instrument evaluation sampling	4000 points
resolution	0.001 µm
Indication error	± 5 %
Measurement repeatability	± 3 %
Measure the maximum height of the workpiece	300mm
Sensors can measure	Surface roughness of various parts such as flat, inclined, inner hole surface, outer cylindrical surface, deep groove surface, circular arc surface, spherical surface, etc
Natural diamond contact needle	Standard type, height<8mm Small hole type Pin radius: 2um, force measurement: 4 mN
Sliding speed of the drive box	2mm/s
Drive box lifting form	automatic rising-lowering
movement speed	0.5 mm/sec
Linear region	Vertical 640 um
Steps and Pt measurement range	100 um
Resolution	0.1 um
Axial measurement range	60 mm
Figure	Direct contour, filtered contour
Magnification ratio of X and Y for contour shapes	auto select
filter	ISO 2CR filter
Small hole measurement range	≥ Ø5 mm
x-y table	Rotation angle ± 10? X-Y movement range 15 mm
Dimensions of the inner and outer rings of the bearing	The maximum outer diameter of the inner ring is 280mm The minimum aperture of the outer ring is 12mm Thickness ≤ 160 mm
Printing paper specifications	A4 paper
operating system	WinXP
Instrument power supply	220 VAC ±10%, 50Hz
Marble workbench size	640×400×100mm
Gross weight of the instrument	150 kg

Instrument Standard Configuration List

1. One pillar and marble base
2. One controller
3. One driving device
4. One sensor
5. One set of X-Y worktable
6. One V-shaped platform
7. One A/D conversion card
8. One signal cable
9. One signal control wire
10. One standard contact pin
11. One small hole contact pin
12. One roughness sample
13. One set of measurement software and installation disk
14. Lenovo commercial computer and HP inkjet printer 1 set