Rotary vane and rotary screw compressors: Tribol 890/32 and 890/68 are designed for vacuum pumps and rotary compressors where circulation systems inject oil directly into the air stream to lubricate, cool and seal the compressor. The Tribol 890 range performs better than petroleum oils in flooded rotary vane and screw compressors. By minimising varnish and carbon deposits, it can extend drain intervals from 1,000 hours to more than 5,000 hours in most vane compressors. Under normal use flooded screw compressor drain intervals can be extend to well over 8,000 hours with maximum air discharge temperatures =/< 100°C, as defined by ISO 6743-3:2003. Tribol 890 can also be used under severe conditions with maximum air discharge temperatures > 100°C however drain intervals could be reduced.
Reciprocating compressors: Tribol 890/100 is used for both crankcase and upper cylinder lubrication in reciprocating compressors for either normal or severe duty lubrication, as defined by ISO 6743.
Normal duty is defined as:
• discharge temperatures =/< 165°C
• differential pressures =/< 2.5 MPa (25 bar)
• discharge pressures =/< 7.0 MPa (70 bar)
Severe Duty is defined as:
• discharge temperatures > 165°C
• differential pressures > 2.5 MPa (25 bar)
• discharge pressures > 7.0 MPa (70 bar)
Crankcase drain intervals can be greatly extended and significant reduction in valve inspections and cleaning are possible. Lower volatility permits lower feed rates to reduce carryover and deposit formation.
Hydraulic and circulating systems, gears, bearings: where rust and oxidation inhibited (R&O) turbine type circulating oils are specified. Tribol 890 is particularly well suited where operating temperature ranges are too extreme for mineral oils.
Tribol 890 is classified as follows:
DIN 51506 classification – VBL, VCL and VDL.
ISO 6743/4 – DAG, DAH and DAJ for rotary air compressors also DAA, DAB for trunk pistons at high pressure and high temperature (Viscosity grade 100)
• Excellent thermal and oxidative stability leads to longer operating life and reduce lubricant costs. Can last up to 4 to 8 times longer than mineral based compressor oils depending on operating conditions.
• Natural cleansing action prevents the formation and build-up of varnish, sludge or deposits, which in single or multiplestage reciprocating compressors, prevents valve wear or sticking. This allows more efficient recompression and provides clean intercoolers. The resulting benefits are less heat generation, reduced fire potential as well as reduced energy input required for constant discharge capacity and overall improved compressor efficiency.
• Low volatility means less oil contamination of plant air, greater demister efficiency, less maintenance of filters and separators and reduced oil consumption.
• Natural oil film strength and lubricity with additional load carrying and antiwear additives providing excellent wear protection and reduced downtime from unscheduled maintenance