Blackmer GNX Series
Alignment-Free Reduced-Speed Heavy Duty Sliding Vane Pumps
Alignment-Free Reduced-Speed Heavy Duty Sliding Vane Pumps
- Zero-alignment points allows for maximum reliability and easy maintenance
- Zero safety guards provide safe environment for operator
Sliding Vane Movement
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- Unique sliding vane pump design self-adjusts for wear to maintain flow rates
- Sliding vane design provides sustained performance and trouble-free operation
- Excellent self-priming and dry-run capabilities
- High suction lift and line-stripping capabilities
- Viscosity flexibility: 0.2 cP to 4,250 cP using same pump
- Pressure flexibility: 0 psi – 125 psi (0 ft TDH to 290 ft TDH) without sensitivity to BEP operation
- Easy maintenance: vanes can be easily replaced without removing the pump from the piping system
- Low maintenance and low life-cycle costs
Between Bearing Design
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Sliding vane pumps use symmetrical bearing support, which supports shaft
loading on both sides:
- Results in negligible shaft deflection
- Extends seal, bearing, and shaft reliability and increases pump life
Relief Valve Design
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Sliding vane pumps offer a full port, quick opening trim valve design.
- Cracking pressure equals full recirculation pressure
- Allows for one motor size smaller than competing pumps, which have separate cracking and relief pressures
- Prevents derate of pump pressure (i.e., usable range is same as pump’s capacity)
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Gearbox Housing
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Gearbox Housing
- Heavy duty bearings and shaft and oversized lube oil reservoir yields >4.0 service factor on full rated torque
- Single-stage speed reduction is ideal for desired speed ranges (200-815 rpm output speeds)
- Numerous ratio options yield speed flexibility to peg desired flow rate
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Motor Flange
- C-face or D-flange interface between gearbox and motor holds position and eliminates need for shaft alignment
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Pump Adaptor
- Oversized adapter attaches the gearbox to the pump head
- Proprietary hollow bore gearbox accepts standard pump shaft without a coupling
- Position held by doweled connection between pump and gearbox, eliminating need for shaft alignment. Pump will not lose alignment during operation, during maintenance, or during unit install/relocation
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Gearbox Rotation
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Motor
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Full Range of C-face Motors
- Rating: 1 HP – 50 HP (0.7 kW – 40 kW)
- Power Supply: 1-phase or 3-phase, 190/240/380/460/575 volt, 60 Hz or 50 Hz
- Inverter duty (VFD rated) for 2:1 to 10:1 constant torque turndown
- Hazardous Class: Both TEFC and Hazardous Explosion Proof Division 1
- Arrives pre-shimmed when purchased from the Blackmer factory
Composite Polymer Concrete BaseplateSteel Baseplate
Composite Polymer Concrete Baseplate
Corrosion Resistant:
- Will not rust or corrode
- Eliminates need for paint or expensive protective coatings
Maximum Reliability:
- 0.002" per foot flatness eliminates need for secondary machining operations and provides a lifetime level mounting surface
- 4x better vibration dampening provides reduced fatigue on rotating elements (motor, gearbox, and pump)
Steel Baseplate
- Upgraded bent steel with full length welded motor pads
- Built-in anchor holes
- Tight tolerances for machined surfaces ensure level anchoring points
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