Bison BRF Bare Shaft Compressor Blocks have been developed from 40 years of compressor manufacturing and design. All new enhanced features lift reliability and performance levels to new highs and the design ensures faster more efficient servicing.
Bare Shaft Compressor Features:
Bare Compressors Pressurised Crankcase
Gas leaking from the rod seals and crankcase is one of the major sources of gas leakages in most CNG compressors. By pressurising the crankcase with gas and having internal seals capable of holding the gas internally ensures Zero Gas leakage. This improves the environmental impact due to no gas emissions and can decrease gas loss by up to 3% versus non pressurised systems.
Pressure Balanced Crankshaft
With twin opposed seals balancing the crankcase / crankshaft pressures there is no end loading of the crankshaft. This extends bearing life up to 150,000 hrs L10.
Horizontal Design
Horizontally opposed cylinders greatly reduces vibration. This creates longer service intervals, reduced foundation requirements and higher efficiency due to smoother running. It also allows for higher rotational speeds for increased system capacity and shorter stroke length
High Strength Components
New designs, materials and technology result in superior component strength. Pistons, Piston rods have the potential to operate for the lifetime of the machine with the exclusion of wear.
Lubricated Cylinder Technology
Bison Bare Compressors have an auxiliary oil pump which is integrated onto the crankcase delivering oil to the divider block distributing measured amounts of oil directly to the piston rings and rod seals. The benefit of this system is increased ring and seal life through reduced friction. Our design and system components offer the ability to deliver gas at equal or less oil carryover than standard non lubricated machines and can operate at ¼ of the maintenance cost of a non-lubricated system.
- Pressurised Crankcase
- Pressure Balanced Crankshaft
- Longer bearing life
- Cross-head integral with Crankcase
- Larger capacity oil filter
- Improved oil mist filtration
- 3-piece low pressure pistons
- Improved piston rod technology
- Rugged oil pump bearings
- Externally serviceable oil pump
