An API 617 compliant integrally geared single-stage centrifugal compressor with flows to 3,550 ACFM (6,030AM³/hr); Max working pressure 1,600psig (110barg).

The BMC-34X TYPE A is an API 617 compliant horizontal integrally geared single-stage centrifugal compressor.

- Flows to 3,550 ACFM (6,030 AM³/hr)
- Max working pressure 1,600 psig (110 barg)

Based on more than 50 years of technological innovation, the Sundyne BMC integrally geared centrifugal compressor is precision engineered to provide pulsation- and vibration-free operation. Built to meet exacting API-617 / ISO 10439 standards, the BMC will run continuously for 5 years, delivering oil-free process gas with no emissions. These compressors are designed to meet the unique Best Efficiency Point (BEP) of each customer’s application, resulting in a tailor made solution that reduces process loss and eliminates emissions. Additionally, these horizontally configured compressors are ideal for skid packaging — due to their unique modular baseplate — and are easy to install into any process environment. Backed by our global network of Authorized Service Centers, Sundyne BMC compressors are the ideal solution for handling the most demanding high-head, low-flow applications in the refining, petrochemical, LNG, power and mining industries.

The LMC/BMC 34X – 550HP Gearbox is here!  > Learn More



Performance Envelope

Data Sheet



Maximum Flow   3,550 acfm 6,030 am³/hr
Maximum Speed  34,200 rpm-60Hz 33,600 rpm-50Hz
Maximum Working Pressure  1,600 psi 110 bar
Temperature Range  -200 to 500°F -130 to 260°C
Maximum Motor Size  450 hp 335 kW
Hydro Test Pressure  1.5 Times Maximum Working Pressure
Min Casing Thickness  0.75 in 19.05 mm
Corrosion Allowance  0.125 in 3.18 mm
Impeller Clearance  0.03 to 0.05in 31.8 to 38.1mm
Shaft Diameter at Bearings  1.5in (38.1mm)
Mechanical Seal Sizes-Outboard... 1.5 in 38.1 mm
Mechanical Seal Sizes-Inboard  1.5 in 38.1 mm
Mounting  Horizontal
Flanges  600# ANSI RF standard, other ratings available
Suction Flange  3, 6, and 8 in
Discharge Flange  2, 4, and 6 in.
Gearbox Oil Temp Range (normal... 120 to 140°F 49 to 60°C Consult Factory
Minimum Gearbox Starting Temp  32°f (0°C) with light turbine oil, lower with approved synthetic oil
Gearbox Lubricant  ISO VG-64 General Purpose Oil
Gearbox Sump Capacity  Per API 614
Gearbox Lube System  Pressurized
Gears  Hardened and precision ground, helical AGMA class 13
Input and Idler Bearings  Spherical roller element (input), hydrodynamic (idler and output). Min 5 year uninterrupted service.
Output Bearings  Solid Journal or Tilt Pad thrust and radial as required
Coupling  Spacer Type
Materials of Construction  Carbon Steel, Stainless Steel castings, 17-4PH, Titanium impellers

Integrally Geared Centrifugal API-617 Compressors
At Sundyne Corporation, we pride ourselves on being specialists in API centrifugal compressor standards.
Integrally Geared Centrifugal Single Stage Heavy Duty Compressor
Sundyne Corporation single-stage centrifugal compressors typically provide the same performance range as multi-stage, piston driven positive displacement compressors, allowing for smaller, easier to maintain equipment that requires overall less energy to keep running.

ISO International Standards Organization
The International Organization for Standardization (ISO) stands as the world's largest developer and publisher of standards, helping to simplify and standardize a range of industries, from mechanical engineering to agriculture.
API American Petroleum Institute
The American Petroleum Institute (API) has been working to standardize industrial equipment and operations via the development of API standards since 1924.

  • Oil and Gas Production
  • Reliable Centrifugal Compressors for Power Generation Fuel Gas Boost
  • LNG Liquid Natural Gas
  • Chemical Processing
  • Petrochemical
  • Gas Processing
  • Specialty Gases
  • Refining
  • Silicon Manufacturing

  • Atomizing Air
  • Hydrogen
  • Petroleum Production and Refining
  • Acetic Acid
  • Evaporators
  • Natural Gas
  • Butane
  • Gas Production
  • Nitrogen
  • Ethylene
  • Power Generation
  • Vapor Recovery
  • Natural Gas Extraction
  • Refrigeration
  • Flue Gas Desulphurization
  • General Processing Industry
  • HC Boost
  • Polypropylene
  • Acetylene
  • Clean Fuels
  • Hydrocarbon Processing
  • OEM
  • Fuel Gas
  • Lift Gas
  • Purge Gas
  • H2S Wet Gas
  • Chemical Transfer
  • Gas Boost
  • Recycle
  • Desulfurization
  • Stripper Overhead
  • Chemical Processing
  • Gasification
  • Corrosive Gases
  • Waste Gas
  • Ammonia
  • Pipeline Booster
  • Regeneration
  • Chlorine
  • MTBE Replacement