Seta-Shell Four Ball Tester-Autoload – 19900-3

The Autoload Seta-Shell Four Ball Lubricant Tester determines the friction properties of extreme pressure oils and greases. Used in tribology research laboratories and in the routine quality control of finished lubrication products.

A ball, mounted in a chuck, is rotated against three stationary balls in a pot containing the sample lubricant. The digital speed controller has three factory pre-programmed settings which are 1200, 1475 and 1760 rpm. A load, adjustable in the range of 6 to 800 kgF, is applied to the balls via a balance beam and electric jack. The applied load is displayed on a digital readout. The torque transferred between the rotating and stationary balls is measured and displayed. The digital timer, with a range of 0.1 seconds to 9999 hours, can be used to control the duration of the test. If the torque exceeds a preset level, or the balls weld, during a test, the power to the drive motor is automatically turned off.

Methods: ASTM D2266, ASTM D2596, ASTM D2783, ASTM D4172, IP 239, BS EN ISO 20623, BS ISO 26422, DIN 51 350


  • Drive speed from 1200 to 1760rpm
  • Torque measurement and limiting
  • Full Digital Control
  • Digital displays of applied load, torque, time
  • Safety splash guard

The optional Seta Wear Loading Kit (19940-0) allows the user to quickly convert the equipment into a Four Ball Wear Tester for ASTM D2266 and D4172 tests.

Supplied with:
1000 IP 239 test balls (ISO 683-17, ISO 3290-1 Grade G5)
Torque wrench with adjusting key and certificate of calibration
Instruction manual

SPEED RANGE 1200 to 1760 rpm
LOAD RANGE 6 to 800 kgF
TIMING 0.1s to 9999 hr
VOLTAGE 220/240 V, 50/60 Hz, 32 A (single phase)
POWER 2.6 kW
SIZE (HXWXD) 165 x 82 x 62 cm
WEIGHT 180 kg
CCCN CODE Tariff 90319000

Lazar Scientific is your reliable source for Tribological Testing Equipment.


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