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1.1 Test mode and specimen
1.1.1 Pin-on-disc test (ASTM G 99)
- Pin specimen : ¥õ2¢¦10mm (1mm step)
- Disc specimen : ¥õ30¢¦100mm, t 2¢¦10mm
1.1.2 Thrust washer test (ASTM D 3702)
- Washer specimen : ¥õ31.6mm, t 9.6mm
- Disc specimen : ¥õ25.5mm, t 4.8mm
1.1.3 Four ball test(ASTM D2266, ASTM D4172)
- Ball specimen : ¥õ12.7mm
- Lubricant enclosure
1.2 System components and specifications
1.2.1 Loading unit
- Precise locator for the alignment of loading axis : ¡¾0.01mm
- Precision control system for 10¢¦10,000 N load
- Loading fluctuation limit : ¡¾1% for static and dynamic
- Load cell built-in for automatic load control
- Dead weight loading attachment for 0¢¦100 N
1.2.2 Test specimen built-in unit
- Test specimen holders for all type of fixed and moving specimens
- Environmental gas enclosure
- Convenient loading and unloading system
- Rigid supporting system for unbalance high load
- Snap ring heating system for rotating disc
- Temperature range available : ambient ¢¦ 250¡É (1% step)
- Real time specimen temperature measurement
- Heat resistant bearing and materials
- Proper heat insulation and water cooling
- Lubricant reservoir
- Real time friction torque measurement (optional)
1.2.3 Load support and Motion translation unit
- High load capacity bearing structure
- Bevel gear system
- High speed operation up to 3,000 rpm
- Anti-vibration mechanism
- Use of alignment pin
1.2.4 Control motor unit
- Motor speed : 0¢¦3,000 rpm (1 rpm step)
- Precise speed control driver : ¡¾1 rpm during 10min loaded test
- Real time speed measurement
- Anti-vibration mechanism
- Uses of alignment pins for motor
2.2.5 Control unit
- Standing type control box
- Precise controls for applied load, motor speed, temperature
- Power on/off switch
- Test start and emergency stop switches
- Auto-stop functions by timer and revolution counter
- Auto-stop functions by over-load and over-temperature sensing
- Data output ports for friction force, motor speed, temperature
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