Blackmer Products

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Blackmer® is the leading global provider of innovative, high-quality sliding vane, centrifugal, screw and regenerative turbine pump, and reciprocating gas compressor technologies for the safe transfer of liquids and gases.

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Sliding Vane Pumps

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Blackmer Markets

Providing Innovative Product-Transfer Solutions for a Variety of Markets and Applications

Blackmer provides innovative product transfer solutions for many markets and applications, including in the chemical process, energy, transport, military & marine; general industrial, and oil & gas industries.

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General Industrial

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HRB HRB-GX Bracket 600 HRA HRA-GX Bracket 600 HROF HRO-GX Bracket 600

Gear Reducers

Blackmer® helical gear reducers are designed for use with 1,750, 1,150, 1,450, and 950 rpm motors up to 30 hp. A full range of standard reduction ratios are available from 2.24:1 to 9.08:1 to provide standard operation speeds for Blackmer pumps as well as other brands of positive displacement pumps.

Blackmer gear reducers are rated in accordance with practices of ANSI/AGMA 6010. They are manufactured in three sizes (HROF, HRA, and HRB) to accommodate a variety of pump speeds for low to high-viscosity transfer applications.

Gear reducers are available fixed bracket mounted (HROF), or adjustable bracket mounted versions (HRA and HRB) for fast, accurate alignment of pumps/reducers and prime movers.

Features and Benefits

Blackmer gear reducers are constructed on hardened, heat-treated, precision helical gears and pinions to provide years of trouble-free operation. For smooth, quiet running, the gears and pinions are immersed in oil, while shafts are supported at both ends by large ball bearings for added strength and reliability.

Ratios

Model Reduction Ratios
HROF 2.24, 2.72, 3.32, 4.10, 4.94
HRA 2.24, 2.76, 3.40, 4.19, 5.06, 6.27, 7.65
HRB 2.70, 3.52, 4.36, 5.77, 7.71, 9.18