STANDARD FEATURES OF NOV'S BEAR PUMPS:
Power Frames
-Ductile iron one piece construction for added strength and durability
-Symmetrical design allows for left-hand or right-hand drive and easy conversion
-Designed for direct top mount of drivers
-Versatile design accepts V-belt, chain, gear, or clutch drive trains
Crankshafts
-High strength ductile iron construction is standard; forged alloy steel is available for special applications
- Designed for use with tapered roller bearings to carry higher crankshaft/rod loads
Crossheads
-Circular full piston type crossheads evenly distribute rod load to power frame
-Polished stainless steel crosshead stubs for long seal life
-Double sealed crosshead stub seals to prevent oil loss and oil contamination
-Crosshead extensions connect to plungers outside of power frame for easier maintenance
Connecting Rods
-High strength ductile iron construction
- Precision automotive type Babbitt lined journal bearings
Wrist Pins
-Case hardened high strength alloy steel for long life
Lubrication
-Splash and gravity lubrication promotes lubrication to all moving parts, keeping the oil constantly circulated and cooled
-Oil sight gauge allows quick convenient observation of power end oil level when running or idle
Fluid Cylinder
-Carbon steel material is standard; stainless steel and aluminum bronze are available as required
-Threaded NPT connections are standard; flanged or other special connections available upon request
-Suction and discharge ports on both sides of fluid cylinder on most models
-Vertical and L-shaped cylinder designs available
-Hardened stainless steel wing guided valves and seats are standard
-Spring loaded valves for positive closing
-Large volumetric areas through seats for reduced fluid velocity and efficient fluid transfer
-Colmonoy coated steel plungers are standard; other coatings and materials are available as required
-Forged steel stuffing boxes are standard