• L-60-1 Performance Test Apparatus

L-60-1 Performance Test Apparatus



The L-60-1 Performance Test determines the deterioration of gear lubricants under severe thermal oxidation conditions. The sample lubricant is tested for 50 hours in a standardized gear box operating under a predetermined load. An elevated temperature and controlled air flow are maintained throughout the test and a copper catalyst is employed to accelerate the breakdown. At the end of the test period, various lubricant properties are determined by standard testing methods, and the weight loss of the catalyst is measured. The deposits that are formed on the gear box surfaces and the catalyst are examined and reported.

  • Conforms to ASTM D5704 and STP512A L-60-1 Performance Test

Gear Case and Drive System
Two spur gears and a test bearing are operated inside a machined stainless steel case with removable window. The drive gear shaft is coupled to a heavy duty ball bearing motor loaded by a 45 ampere alternator. The standard L-60-1 test gear loading value of 128 watts generator output is precisely maintained by a digitally indicated load bank. All gear box components are easily accessible for cleaning.


Temperature Control 

An insulated heating case with high volume blower encloses the gear box. Sample oil temperature is maintained at 325°F ± 1°F (162.8 ± 0.6°C) by a digital indicating controller with PT-RTD sensor. A built-in microprocessor based recorder produces a test oil temperature chart for reporting purposes. Overtemperature protection is provided by a separate PT-RTD-sensed controller.


Air Flow Control
A high accuracy mass flow controller with digital indication maintains air flow to the gear box at a constant 1.1L/h. The self correcting controller maintains the setpoint flow rate regardless of fluctuations in air input pressure or temperature. Test cabinet and control cabinet are finished in chemical resistant polyurethane enamel. Test cabinet has a cover for access to the gear box and a removable drive motor cover.

Conforms to the specifications of: 

ASTM D5704; STP512A L-60-1 Performance Test (formerly CRC L-60 Test); FTM 791-2504

Controls and Monitors:

Sample Oil Temperature:°C/°F, digital setpoint and display, user adjustable
Overtemperature Limit Control: °F, user acceptable
Heating Chamber Air Temperature:°C/°F
Air Flow: L/h, digital setpoint and display, user adjustable
Test Gear Load: Volts DC, Amps. DC, digital display, user adjustable
Sample Oil Temperature Recorder: Programmable microprocessor based strip chart recorder with digital display, °C/°F

Drive Motor: 1725rpm thermally protected ball bearing type

Alternator: 45 ampere output

220-240V 60Hz, Single Phase, 15A
220-240V 50Hz. Single Phase, 15A

lxwxh,in.(cm)
Test Cabinet: 24x24x141⁄2 (61x61x37)
Control Cabinet: 231⁄2x231⁄2x173⁄8 (60x60x44)

Net Weight: 330 Ibs (149.7kg)

  • K18661 Test Kit, for one test. Includes GA34 test gear, GA50 test gear, R-14 test bearing, viton shaft seals (2),
  • O-ring seal, copper test strips (2)
  • 380-150-001 Silicone Carbide Paper, 150-grit (pack of 50)