R&B Grinding
RB Industrial Manufacturing (formerly R&B Grinding) is a Racine, Wisconsin-based precision metalworking manufacturer serving Fortune 500 OEMs across aerospace, medical, automotive, energy, and industrial sectors with grinding, CNC machining, and Swiss screw machining services.
- Company typePrivate
- Founded1958
- HeadquartersRacine, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What R&B Grinding does
RB Industrial Manufacturing LLC, formerly R&B Grinding, is a Racine, Wisconsin-based precision metalworking manufacturer founded in 1958 and recently acquired in 2025 by private equity firm Whitebridge Capital Partners. The company operates a 155,000 sq ft manufacturing campus with 100+ employees and is structured as a vertically integrated one-stop metalworking provider, offering grinding (cylindrical, internal, Blanchard, and centerless), multi-axis CNC precision machining, and Swiss screw machining under a single cellular manufacturing workflow. Its customer base consists primarily of Fortune 500 OEMs and industrial manufacturers across aerospace, agriculture, automotive, energy, heavy equipment, industrial manufacturing, and medical device sectors, with materials processed including steel, stainless steel, aluminum, and custom alloys.
The company's go-to-market is a direct B2B enterprise field sales motion: project-based quote requests are submitted by phone (262-634-5538) or email ([email protected]), with pricing determined per part by complexity, tolerances, materials, and volume rather than via standard tiers. Distribution is domestic, focused on the Midwest USA, with no resellers, marketplace channels, or digital sales infrastructure disclosed. Marketing relies on a company website (rbgrinding.com) and direct customer engagement; no formal digital marketing or content programs are described.
RB Industrial is ISO-certified (specific standard not disclosed), supports the documentation and qualification requirements typical of large OEM customers, and operates without a disclosed management team, named customer logos, revenue figures, funding rounds, patents, or productized software. The 2025 rebrand from R&B Grinding to RB Industrial Manufacturing LLC explicitly reflects an expanded machining scope beyond the original grinding business and signals the new PE owner's growth ambitions, supported by an active hiring ramp through an online Paylocity careers portal.
R&B Grinding firmographics
Firmographics- Name
- R&B Grinding
- Legal name
- RB Industrial Manufacturing LLC
- Website
- https://rbgrinding.com
- Company type
- Private
- Founded year
- 1958
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- RB Industrial Manufacturing (formerly R&B Grinding) is a Racine, Wisconsin-based precision metalworking manufacturer serving Fortune 500 OEMs across aerospace, medical, automotive, energy, and industrial sectors with grinding, CNC machining, and Swiss screw machining services.
- Ownership category
- akta.pro rank
R&B Grinding industry classification
Industry- Product category
- Precision Metalworking Services
- NAICS
- Machine Shops (332710), Turned Product and Screw, Nut, and Bolt Manufacturing (33272)
- SIC
- Screw Machine Products (3451), Miscellaneous Fabricated Metal Products (3490), Metal Forgings & Stampings (3460)
- akta.pro primary industry
- Grinding, Honing & Superfinishing Equipment (IMAHADAE)
- akta.pro secondary industries
- Metal Cutting Tools, Tooling & Workholding (Cutters, Inserts, Chucks, Fixtures) (IMAHADAB), Metal Forming & Fabrication Machines (Presses, Bending, Shearing, Stamping) (IMAHADAC)
Keywords
Where R&B Grinding is headquartered
LocationHeadquarters
- HQ city
- Racine
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
R&B Grinding business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D
Revenue model
- Precision Metalworking Services: Project-based precision manufacturing services including grinding, machining, and screw machining. Revenue generated through custom part production for OEM customers with pricing based on complexity, materials, and volume. Vertical integration allows for machining, finishing, and assembly in one seamless workflow.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Custom manufacturing services - quote-based pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels2 records
R&B Grinding product offering
Product offeringCore offering
R&B Grinding (now operating as RB Industrial Manufacturing LLC) provides full-service precision metalworking under one roof, including cylindrical, internal, Blanchard, and centerless grinding, multi-axis CNC milling and turning, and Swiss screw machining. The vertically integrated facility processes steel, stainless steel, aluminum, and custom alloys to deliver tight-tolerance components for OEM customers across aerospace, automotive, medical, energy, heavy equipment, and industrial manufacturing sectors.
Product overview
RB Industrial Manufacturing offers full-service metalworking under one roof through three integrated service lines: Grinding Services (cylindrical, internal, Blanchard, and centerless grinding), Precision Machining (multi-axis milling and turning via CNC), and Swiss Screw Machining (high-volume production of small precision parts). These services share a common manufacturing workflow—customers can access machining, finishing, and assembly in one seamless operation. The company also processes materials including steel, stainless steel, aluminum, and custom alloys.
Differentiator
Problem solved
Functional benefit
Products and services
- Grinding Services
- Precision Machining
- Swiss Screw Machining
Companies that use R&B Grinding
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
R&B Grinding technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
R&B Grinding partnerships and signals
Strategic signalScale indicators5 records
Recent moves5 records
Expansion highlights5 records
R&B Grinding competitors and assessment
Company assessmentDirect peers
- Mayville Engineering Company (MEC): US-based contract metal manufacturer offering fabrication, machining, and assembly to industrial and heavy equipment OEMs. Directly comparable in customer base (heavy equipment, industrial), vertically integrated model, and Midwest operating geography.
- Protolabs: On-demand digital manufacturer of CNC machined, turned, and ground prototype and production parts. Directly competes for the same precision-machined-parts RFQs that RB Industrial serves, with overlapping capabilities in milling, turning, and finishing.
- Horst Engineering: Precision contract manufacturer specializing in Swiss screw machining, CNC milling/turning, and grinding for aerospace, medical, and defense. Highly comparable in service mix, especially the Swiss screw machining capability, and in the precision-required verticals served.
- BTD Manufacturing: Midwest-based contract metal fabricator providing stamping, machining, and assembly to industrial and heavy equipment OEMs. Comparable in service breadth, customer verticals, and regional Midwest operating footprint.
- Phillips Precision: Swiss screw machining and precision machined components provider serving medical, aerospace, and electronics. Closely aligned with RB Industrial's Swiss screw machining service line and the same micro-precision, tight-tolerance end-markets.
- Pioneer Service: US precision machining and Swiss screw machining shop serving aerospace, medical, and industrial customers. Directly comparable capability set in Swiss turning and multi-axis precision machining for regulated industries.
- Vulcan Engineering: Specialty steel castings and precision metal components manufacturer serving heavy industrial and capital equipment customers. Comparable in heavy-industry customer focus and complex metal component scope.
Broad incumbents
- Precision Castparts Corp (now part of Berkshire Hathaway): Large diversified precision metal components supplier with broad aerospace, energy, and industrial exposure. Operates as a much larger incumbent across the same precision-machined-parts category, with overlapping aerospace and industrial customers.
- Sterling Industries (a GATE Holdings company): Diversified contract manufacturer of metal fabricated and machined components serving industrial, heavy equipment, and energy customers. Comparable as a multi-site, multi-capability contract manufacturer serving similar industrial OEMs.
Regional players
- Midwest Precision Machining: Midwest US precision machine shop offering CNC milling, turning, and grinding services. Comparable in regional geography, machine shop capabilities, and industrial customer base, though smaller in scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
R&B Grinding social profiles
Digital presenceR&B Grinding compliance and trust
Trust signalCompliance1 record
R&B Grinding financial estimates
Financial estimateRevenue estimate
Valuation estimate
R&B Grinding leadership team
Management profileNumber of profiles
R&B Grinding funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
R&B Grinding M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about R&B Grinding
What does R&B Grinding do?
R&B Grinding (now operating as RB Industrial Manufacturing LLC) provides full-service precision metalworking under one roof, including cylindrical, internal, Blanchard, and centerless grinding, multi-axis CNC milling and turning, and Swiss screw machining. The vertically integrated facility processes steel, stainless steel, aluminum, and custom alloys to deliver tight-tolerance components for OEM customers across aerospace, automotive, medical, energy, heavy equipment, and industrial manufacturing sectors.
Is R&B Grinding a public or private company?
R&B Grinding is a private company. It is classified as private equity controlled and is currently operating.
When was R&B Grinding founded?
R&B Grinding was founded in 1958. It employs 51 to 100 people.
Where is R&B Grinding based?
R&B Grinding is headquartered in Racine, United States, in the North America region.
How does R&B Grinding make money?
One revenue line is on record: precision Metalworking Services.
Who are R&B Grinding's main competitors?
Direct peers on record are Mayville Engineering Company (MEC), Protolabs, Horst Engineering, BTD Manufacturing, Phillips Precision, Pioneer Service and Vulcan Engineering. Broad incumbents are Precision Castparts Corp (now part of Berkshire Hathaway) and Sterling Industries (a GATE Holdings company). Midwest Precision Machining is listed as a regional player.
Does R&B Grinding have an API?
No public API is recorded for R&B Grinding.
What industry is R&B Grinding in?
R&B Grinding's product category is Precision Metalworking Services. Its primary akta.pro industry code is IMAHADAE, Grinding, Honing & Superfinishing Equipment, with a secondary code of IMAHADAB, Metal Cutting Tools, Tooling & Workholding (Cutters, Inserts, Chucks, Fixtures). Its NAICS code is 332710 and its SIC code is 3451.