Rotating Machinery Services
Rotating Machinery Services is an independent aftermarket turbomachinery engineering and services provider that repairs, overhauls, and supplies OEM equipment for critical rotating equipment (compressors, turbines, expanders), serving refining, petrochemical, power generation, mining, and industrial customers globally through 9+ facilities in the US, UK, and Netherlands.
- Company typePrivate
- Founded1998
- HeadquartersBethlehem, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Rotating Machinery Services does
Rotating Machinery Services (RMS), founded in 1998 and headquartered in Bethlehem, Pennsylvania, is an independent aftermarket engineering and services company specializing in large, highly engineered rotating turbomachinery. The company repairs, overhauls, upgrades, and supplies OEM equipment for axial and centrifugal compressors, oil-free screw compressors, steam and gas turbines, power turbines, FCC expanders, and nitric acid expanders, serving refining, petrochemical, power generation, mining, steel, and industrial customers. RMS is both a multi-OEM aftermarket provider (covering legacy brands such as GE Fitchburg, Elliott, Siemens, Ingersoll-Rand) and the OEM of record for AC Compressor, CONMEC, and (since 2023) the Siemens Energy FCCU Hot Gas Expander product line.
The company's technical stack includes Faro Arm 3D scanning and metrology, finite-element structural and rotordynamic analysis, CFD-based acoustic pulsation design per API 619, and proprietary Submerged Arc Welding with custom chrome-modified flux chemistries for large high-value components. It operates 9+ facilities totaling more than 150,000 square feet across the United States (including Bethlehem HQ, Houston Ship Channel, and Appleton), the United Kingdom (Worcester), and the Netherlands (Enschede, Zoetermeer), and is ISO 9001:2015 certified at its principal US sites. RMS monetizes through a project-based, quote-driven pricing model delivered via enterprise field sales: revenue streams include repair/overhaul services, OEM equipment and parts sales (including the AC Compressor/CONMEC/Siemens HGE product lines), engineering and technical services, and rerate/upgrade projects, supported by emergency field-service and outage response. The company has grown organically and through serial acquisitions (MEPCO 2017, AC Compressor/CONMEC 2018, Axis Technical Services 2021, Siemens HGE 2023, Origin Metrology 2023, TurboCare/EthosEnergy 2025), is privately held with no disclosed institutional ownership, and is led by CEO John Bartos.
Rotating Machinery Services firmographics
Firmographics- Name
- Rotating Machinery Services
- Legal name
- Rotating Machinery Services, Inc.
- Website
- https://rotatingmachinery.com
- Company type
- Private
- Founded year
- 1998
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Rotating Machinery Services is an independent aftermarket turbomachinery engineering and services provider that repairs, overhauls, and supplies OEM equipment for critical rotating equipment (compressors, turbines, expanders), serving refining, petrochemical, power generation, mining, and industrial customers globally through 9+ facilities in the US, UK, and Netherlands.
- Ownership category
- akta.pro rank
Rotating Machinery Services industry classification
Industry- Product category
- Aftermarket Turbomachinery Services
- NAICS
- Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Turbine and Turbine Generator Set Units Manufacturing (333611), Pump and Compressor Manufacturing (33391), Air and Gas Compressor Manufacturing (333912), Other General Purpose Machinery Manufacturing (3339)
- SIC
- Engines & Turbines (3510), General Industrial Machinery & Equipment (3560), Special Industry Machinery (No Metalworking Machinery) (3550)
- akta.pro primary industry
- Rotating Equipment Maintenance (Turbines, Generators, Motors, Pumps, Compressors) (EUAEAGAI)
- akta.pro secondary industries
- Rotating Equipment Start-up & Performance Testing (EUAEAJAE), Specialty Power Systems MRO (Generators, Compressors, Pumps, Welders) (TLAKAHAJ)
Keywords
Where Rotating Machinery Services is headquartered
LocationHeadquarters
- HQ city
- Bethlehem
- HQ country
- United States
- HQ region
- North America
Offices17 records
Markets served
Rotating Machinery Services business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Repair and Overhaul Services: Comprehensive repair, overhaul, and refurbishment services for critical rotating equipment including turbomachinery components, rotors, casings, bearings, and seals. Project-based revenue with custom pricing based on scope and complexity.
- OEM Equipment and Parts Supply: Supply of original equipment manufacturer parts and complete compressor/turbine packages. RMS serves as OEM for AC Compressor, CONMEC, and Siemens hot gas expander product lines. Includes spare parts kits and custom-designed equipment.
- Engineering and Technical Services: Advanced engineering analysis services including rotordynamic analysis, aerodynamic analysis, structural analysis, remaining life assessments, and design engineering. Includes field service, commissioning, and technical consulting.
- Rerates and Upgrades: Performance upgrades, rerating, and modernization of existing turbomachinery to meet changing operational requirements or improve efficiency.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom Project-Based Pricing |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels6 records
Rotating Machinery Services product offering
Product offeringCore offering
Rotating Machinery Services (RMS) is an aftermarket engineering and services company providing repair, overhaul, rerate, and OEM equipment supply for critical rotating turbomachinery including steam turbines, centrifugal compressors, axial compressors, gas turbines, power turbines, FCC expanders, and nitric acid expanders. The company serves as the OEM for AC Compressor, CONMEC, and the Siemens Hot Gas Expander product lines while also supporting multi-OEM equipment through advanced engineering, precision machining, and field service capabilities.
Product overview
Rotating Machinery Services (RMS) is an industrial services company that provides comprehensive aftermarket repair, maintenance, overhaul, and engineered solutions for critical rotating turbomachinery equipment. The company operates as a multi-OEM service provider supporting equipment from AC Compressor, CONMEC, Siemens, GE Fitchburg, Elliott, and many other manufacturers. RMS offers a unified portfolio of services organized around core product categories: Axial Compressors, Centrifugal Compressors (including AC Compressor OEM products and Multi-OEM support), Oil Free Screw Compressors, FCC Expanders, Gas Turbines, Steam Turbines, Power Turbines, and Nitric Acid Expanders. Supporting these core equipment categories are specialized service capabilities including Machining, Coatings & Grinding (Fusion), Blade Manufacturing, Bearing & Seal Capabilities, RMS Technology Services (advanced scanning and modeling), Field Service, Engineering Services, Emergency Repairs, Parts Supply, Remaining Life Analysis, Rerates, and Turnaround support. The company also provides knowledge resources through its Technical Reference Database of over 150 white papers. RMS has expanded its portfolio through strategic acquisitions including AC Compressor/CONMEC (2018), MEPCO (2017), Axis Technical Services (2021), TurboCare/EthosEnergy (2025), Origin Metrology Group (2023), and the Siemens Hot Gas Expander product line (2023).
Differentiator
Problem solved
Functional benefit
Products and services
- Axial Compressors
Quantifiable outcome
- Delivered centrifugal compressor turnaround 2 days ahead of schedule (scheduled 2-week turnaround completed early)
- +3 more outcomes
Companies that use Rotating Machinery Services
Customer profileNamed customers6 records
Segments5 records
Ideal customer profiles3 records
Rotating Machinery Services technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Rotating Machinery Services partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Howden Maintenance PartnerscoreAlliance for servicing hot gas and nitric acid expanders in Europe and Middle East (EMENA) region. Combines RMS's industry-leading Hot Gas Expander expertise and technology with Howden's skilled local repair capability. RMS provides equipment knowledge, engineering, and component sourcing while Howden executes shop work. Both organizations share culture committed to quality solutions and minimizing long-term cost of ownership.
- Howden Maintenance PartnerscoreHowden Maintenance Partners (Belgium-based, ISO 9001:2015 certified) provides field service and workshop capabilities for European operations. Creates European centre of excellence for expanders. RMS responsible for technical aspects and standards while Howden executes repairs.
Scale indicators7 records
Recent moves7 records
Expansion highlights5 records
Rotating Machinery Services competitors and assessment
Company assessmentDirect peers
- EthosEnergy: Independent aftermarket services provider for steam turbines, compressors, and generators serving power generation and oil & gas. RMS directly bought EthosEnergy's steam turbine and centrifugal compressor business (rebrand as TurboCare) in Dec 2025, evidencing near-identical service portfolio and customer base.
- Howden (Howden Maintenance Partners / Chart Industries): Turbomachinery OEM and aftermarket service provider for fans, compressors, and hot gas expanders in process industries. RMS has a formal 2023 alliance with Howden Maintenance Partners for EMENA expanders, making Howden both an ally in execution and a comparable provider in rotating-equipment aftermarket services.
- Atlas Copco (Industrial Compressor Service): Global OEM and aftermarket service provider for industrial compressors (oil-free screw, centrifugal, reciprocating) with extensive service centers. Competes with RMS on multi-OEM centrifugal and oil-free screw compressor overhaul, parts, and field service work.
Broad incumbents
- Ingersoll Rand: Large industrial compressor and turbomachinery manufacturer with an extensive aftermarket service network supporting refining, petrochemical, and power customers. RMS lists Ingersoll-Rand axial compressor work as a case study; Ingersoll Rand competes for the same installed equipment support.
- Elliott Group: Manufacturer and aftermarket service provider of centrifugal compressors, steam turbines, and cryogenic equipment with global field service. RMS has direct OEM references to Elliott (e.g., Elliott 29MBH3 turnaround case study), making Elliott a key OEM-competitor for the same installed equipment.
- Sulzer: Global industrial engineering and services group with a large turbomachinery aftermarket and rotating equipment service business covering pumps, compressors, and turbines across refining, petrochemical, and power. Overlaps with RMS in multi-OEM compressor/turbine repair, overhaul, and rerate services at much broader scale.
- Siemens Energy (Industrial Steam & Compression Service): OEM of industrial steam turbines and compressors with a large global service arm covering overhauls, upgrades, and spare parts. RMS acquired Siemens' FCCU Hot Gas Expander product line in 2023, demonstrating that Siemens services the same installed base and customer types.
- Mitsubishi Power (MHI): OEM and service provider for industrial and power-generation steam turbines, gas turbines, and compressors. Serves the same power generation, refining, and petrochemical customers and is a regular competitor for multi-OEM aftermarket service contracts RMS targets.
- Solar Turbines (Caterpillar): Manufacturer and aftermarket service provider of industrial gas turbines and compressors with strong oil & gas, power generation, and pipeline customer base. Overlaps with RMS gas-turbine remanufacturing and field service offering, particularly around FT4-class machines.
- MAN Energy Solutions (MAN Turbo): OEM and service provider for industrial steam turbines, gas turbines, and large compressors with strong petrochemical and refinery installed base. Directly competes for the same multi-OEM turbomachinery overhaul, rerate, and field service work RMS pursues.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Rotating Machinery Services social profiles
Digital presenceRotating Machinery Services compliance and trust
Trust signalCompliance1 record
Rotating Machinery Services financial estimates
Financial estimateRevenue estimate
Valuation estimate
Rotating Machinery Services leadership team
Management profileNumber of profiles
Profiles9 records
Rotating Machinery Services subsidiaries and ownership
Company hierarchySubsidiaries11 records
Rotating Machinery Services funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Rotating Machinery Services M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Rotating Machinery Services
What does Rotating Machinery Services do?
Rotating Machinery Services (RMS) is an aftermarket engineering and services company providing repair, overhaul, rerate, and OEM equipment supply for critical rotating turbomachinery including steam turbines, centrifugal compressors, axial compressors, gas turbines, power turbines, FCC expanders, and nitric acid expanders. The company serves as the OEM for AC Compressor, CONMEC, and the Siemens Hot Gas Expander product lines while also supporting multi-OEM equipment through advanced engineering, precision machining, and field service capabilities.
Is Rotating Machinery Services a public or private company?
Rotating Machinery Services is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Rotating Machinery Services founded?
Rotating Machinery Services was founded in 1998. It employs 11 to 50 people.
Where is Rotating Machinery Services based?
Rotating Machinery Services is headquartered in Bethlehem, United States, in the North America region.
How does Rotating Machinery Services make money?
Four revenue lines are on record. Repair and Overhaul Services are the primary driver. The others are OEM Equipment and Parts Supply, engineering and Technical Services and rerates and Upgrades.
Who are Rotating Machinery Services's main competitors?
Direct peers on record are EthosEnergy, Howden (Howden Maintenance Partners / Chart Industries) and Atlas Copco (Industrial Compressor Service). Broad incumbents are Ingersoll Rand, Elliott Group, Sulzer, Siemens Energy (Industrial Steam & Compression Service), Mitsubishi Power (MHI), Solar Turbines (Caterpillar) and MAN Energy Solutions (MAN Turbo).
Does Rotating Machinery Services have an API?
No public API is recorded for Rotating Machinery Services.
What industry is Rotating Machinery Services in?
Rotating Machinery Services's product category is Aftermarket Turbomachinery Services. Its primary akta.pro industry code is EUAEAGAI, Rotating Equipment Maintenance (Turbines, Generators, Motors, Pumps, Compressors), with a secondary code of EUAEAJAE, Rotating Equipment Start-up & Performance Testing. Its NAICS code is 3336 and its SIC code is 3510.