The SGW-10G lever-loading four-ball friction testing machine is a cost-effective laboratory evaluation equipment developed by our company to meet the needs of lubricant development and production users.In the form of slide friction, it is used for the loading capacity evaluation of lubricants in the high pressure point contact condition. It can test the maximum nonseizure load PB, sintered load PD and composite wear value ZMZ of lubricants .The four-ball friction test machine can also be used as lubricant for long time wear resistance test, determination of friction coefficient, recording friction and temperature curve. It also can measure the dimension of the wear scar and display,measurement and recording the wear scar on the PC screen.The wear resistance of metallic materials or non-metallic materials can also be studied with special attachments.

The product is suitable for the following standards:

ASTM D2266-01 Test method for friction and wear of lubricating oil (four-ball method)

ASTM D2783-2003 (2009) four-ball bearing capacity of four balls of lubricants

ASTM D2596-2010 Test method for extreme pressure performance of grease (four ball method)

GB/T12583-98 Determination of extreme pressure performance of lubricants (four-ball machine method)；

GB3142-82，Determination of the carrying capacity of lubricants (four-ball method);

SH/T0189-92，Determination of oil abrasion resistance (four-ball machine method);

SH/T0202-92，The method of determination of extreme pressure of grease (four-ball machine method);

SH/T0204-92，Determination of resistance to abrasion of grease (four-ball machine method).

Two. Technical parameters

The serial NO	The project name	Technical indicators
1	Test force
1.1	The Max test force	10000N
1.2	Below 4% of Max test forc， accuracy of test force display	±5N
1.3	Above 4% of Max test forc， accuracy of test force display	±1％
1.4	Loading way	Front lever-loading
1.5	Force holding mechanim	Self-balancing no gap orientation
2	The frictional force
2.1	The Max frictional moment	200N
2.2	Relative Accuracy of the friction moment display	≤±2%
2.3	Large load over friction stop automaticly
3	The heating system
3.1	Heater working temperature range	Room temperature～250℃
3.2	Accuracy of temperature	±3℃
4	Spindle speed
4.1	Spindle frequency conversion speed range.	300~1800r/min （Stepless adjustable）
4.2	Accuracy of Spindle speed	<15r/min
5	A test oil quantity	10ml
6	Diameter of special standard steel ball for test	φ12.7
7	The power of motor	2.2kW
8	The control mode
8.1	The control mode	Whole process touch screen control (dual function)
8.2	Time control	Automatic stop over set time
8.3	Friction control	Automatic stop over setting friction
9	Test machine revolution display and control range	1s～9999min
10	The main structure	Precision casting
11	Test machine size（L×W×Hmm）	1300×490×1220（mm）
12	Microscope of measuring speckle	Electronic measurement system
12.1	Magnification of the microscope	25× 200×
12.2	Measurement range of spot	0～10mm
12.3	Accuracy of spot measurement range	0.01mm
12.4	Digital CCD probe pixel	Three million
12.5	Speckle measurement software	Automatic capture grinding, measuring average

Tel:+86-0531-85860713，+8615508660930

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The contact：Janna Tang

Email:cnjntest@163.com

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