Sunnen

Name

Sunnen

Legal name

Sunnen Products Company

Website

https://sunnen.com

Company type

Private

Founded year

1924

Operating status

Operating

Headcount range

501–1,000 employees

Ownership category

akta.pro rank

Product category

Precision Honing and Bore Finishing Equipment

NAICS

Machine Tool Manufacturing (333517), Other General Purpose Machinery Manufacturing (3339)

SIC

Machine Tools, Metal Cutting Types (3541), Special Industry Machinery, Nec (3559)

akta.pro primary industry

Grinding, Honing & Superfinishing Equipment (IMAHADAE)

Keywords

• Precision honing machines
• Bore finishing equipment
• Industrial abrasives tooling
• Deep hole drilling systems
• Precision bore gaging

Headquarters

HQ city

Saint Louis

HQ country

United States

HQ region

North America

Offices14 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Precision Honing Machines: Sale of industrial honing machines including horizontal, vertical, single stroke, and tube honing machines. Machines range from entry-level to high-production systems with 3-year warranty.
2. Abrasives and Tooling: Sale of honing abrasives (conventional and superabrasives), tooling including mandrels, plated-diamond tools, and MPS Modular Tool System. Over 800 products in catalog.
3. Honing Fluids and Coolants: Sale of premium cutting fluids, honing oils, and coolants for various industrial applications including automotive, aerospace, and medical.
4. Bore Gaging Equipment: Sale of precision gages including dial bore gages, precision electronic gages, and air gages for dimensional measurement.
5. Professional Services: On-site training, custom solutions engineering, process development, installation, maintenance and repair services. The company provides hands-on support and technical expertise as part of their service offering.
6. Financing and Leasing: Equipment financing and leasing programs through partnered equipment finance company. Also offers gage leasing programs for short-term needs.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels6 records

Core offering

Sunnen Products Company manufactures and globally distributes precision honing machines, deep hole drilling equipment, skiving and roller burnishing systems, automated lapping platforms, honing abrasives and tooling, honing fluids and coolants, and precision bore gages. The company's products are used by industrial manufacturers across aerospace, automotive, hydraulics, defense/firearms, medical, energy and contract machining to achieve sub-micron tolerances in bore sizing and surface finishing. Revenue is driven by capital equipment sales supplemented by recurring consumables, custom engineering, training, maintenance, gage leasing and equipment financing.

Product overview

Sunnen Products Company offers a comprehensive precision bore sizing and finishing platform with multiple machine categories and supporting product lines. The core portfolio includes horizontal honing machines (CH-100, LBB/MBB-1660, SH-2000/4000/5000/6000), vertical honing machines (SV-15, SV-3000 with Sunnen2 controls), tube honing machines (HTA through HTS series), single stroke honing machines, external honing (HES), deep hole drilling machines (SHDD), and skiving/roller burnishing machines (SHDS). These machines integrate with Sunnen's extensive consumables ecosystem: 843 abrasive products (conventional and superabrasives), 978 tooling items (mandrels, KROSSGRINDING tools, MPS modular system), 55 honing fluids and coolants, and 20+ precision gages including the new PGA-1000 air gage and PG-series bore gages. The platform is complemented by machine and gage accessories, gage leasing services, pre-owned equipment, custom solutions engineering, process development, training and support, and equipment financing programs. The company also offers factory-reconditioned pre-owned machines and provides comprehensive three-year warranties on all base machines.

Differentiator

Problem solved

Functional benefit

Products and services

• Horizontal Honing Machines Horizontal honing machines for precision bore sizing and finishing across a range of industrial applications, including entry-level and high-production systems.
• Vertical Honing Machines Vertical honing machines for high-precision bore finishing including the SV-15 entry series and the next-generation SV-3000 series with Sunnen2 controls.
• Tube Honing Machines Tube honing machines for finishing hydraulic cylinders and tubes, including the HTA all-electric tube hone that replaced manual honing as the tube-honing benchmark.
• Single Stroke Honing Machines Single stroke honing machines for efficient bore sizing using Single Stroke and KROSSGRINDING tools.
• HES External Honing Machine External honing machine delivering stock removal and surface finishes for oversized components in large-scale manufacturing.
• Deep Hole Drilling Machines (SHDD) SHDD deep hole drilling machines for initial hole generation with large diameter-to-depth ratios, featuring ultra-high pressure systems for even chip removal.
• Skiving and Roller Burnishing Machines (SHDS) SHDS skiving and roller burnishing machines combining two-in-one bore sizing and finishing, up to 70% faster than traditional honing for high-production hydraulic cylinder applications.
• SVL-2115 Vertical Lapping Machine Automated vertical lapping machine based on the SV-2100 platform, providing single-setup processing with index table for parts prone to distortion when honed.
• SV-3000 Vertical Honing Machine Next-generation vertical honing system with Sunnen2 controls, capable of holding tolerances as fine as 0.00025 mm (0.000010 in.) with consistent crosshatch finish.
• Abrasives Precision honing abrasives including over 800 products spanning conventional abrasives, aluminum oxide, silicon carbide, CBN and diamond superabrasives.
• Tooling Honing tooling including standard and retractable mandrels, plated-diamond tools, the MPS Modular Tool System, MMT and KRQ mandrels and specialty tooling.
• Precision Bore Gages Precision bore gages including dial bore gages, the PGE-6000 precision electronic gage, PG-700 and PG-800 precision gages for dimensional measurement without electricity or air.
• PGA-1000 Air Gage Benchtop air gage system delivering new levels of performance, reliability and confidence in dimensional measurement for precision manufacturing quality control.
• Honing Fluids and Coolants Premium cutting fluids and coolants including honing oils, honing coolant concentrates and superfinishing oils for automotive, aerospace and medical applications.
• Pre-Owned Machines Factory-reconditioned pre-owned Sunnen machines including HTA-6100, MBB-1660, ML-2000, ML-4000, SHDS, SSH-1680 and SV-30 at significantly reduced prices.
• Gage Leasing Program Lease program for PG-series bore gages with flexible one-year renewable terms, available for US-based customers.
• Equipment Financing and Leasing Equipment financing and leasing programs through partnered equipment finance company to provide accessibility for significant equipment investments.
• Custom Solutions Engineering Custom solutions engineering for bore creation, sizing and finishing, including custom machine builds, one-of-a-kind tooling and process development services for complex applications.
• Training and Support On-site training and support services including machine installation, operator training, process optimization and application development conducted by experienced technicians.
• Process Development Process development services leveraging decades of honing experience to design productive honing platforms and create optimal procedures and workflows for demanding applications.
• Maintenance and Repair Global service team providing on-site troubleshooting, repairs and preventative maintenance for all Sunnen products, backed by an industry-leading 3-year warranty.

Quantifiable outcome

• Tolerances as fine as 0.00025 mm (0.000010 in.) achievable with SV-3000 Series
• +4 more outcomes

Named customers1 record

Segments12 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• TIBO Tiefbohrtechnik GmbHcoreStrategic or Co-development Partner · 16 April 2026Strategic alliance combining Sunnen's honing expertise with TIBO's deep hole drilling technologies to deliver comprehensive machining solutions. Partnership enables combined marketing and sales initiatives to deliver complementary machine tool technologies to customers worldwide. The collaboration brings together Sunnen's expertise in honing and bore finishing with TIBO's advanced deep hole drilling technologies including BTA drilling, gundrilling, and rifling systems. Initial focus on coordinated commercial efforts across Europe and the Middle East with potential for expansion. The alliance also enables co-branded communications and joint sales initiatives designed to improve customer access to advanced deep hole machining technologies for aerospace, hydraulics, renewable energy, medical technology, and defense sectors.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Gehring: German-based global manufacturer of honing machines and bore finishing technology, serving automotive, hydraulics, and aerospace customers. Gehring is Sunnen's closest direct competitor in precision honing equipment, with overlapping product lines, target customers, and machine categories.
• Nagel Maschinen- und Werkzeugfabrik: German specialist in honing, lapping, and deep hole drilling systems serving automotive, hydraulics, and industrial customers. Directly competes with Sunnen across honing and deep hole drilling, and is also a global peer in precision bore finishing consumables.
• Delapena Honing Equipment: UK-based manufacturer of honing and polishing machines with a long heritage in the field. Competes directly with Sunnen in industrial honing equipment, particularly for engine cylinders and hydraulic applications.
• Engis Corporation: US manufacturer of precision lapping, honing, and polishing equipment, plus superabrasive consumables. Overlaps directly with Sunnen's lapping machines (SVL-2115), honing tooling, and abrasive product lines.
• Lapmaster International: Global supplier of precision lapping, honing, and polishing machinery, plus related consumables. Directly competes with Sunnen in lapping and fine-finishing equipment for industrial customers.
• Peter Wolters: German manufacturer of high-precision lapping, honing, and polishing machines for industrial applications. Direct peer in the bore finishing and flat surface finishing equipment market.
• Glebar Company: US-based precision grinding and honing equipment maker serving medical, aerospace, and general industrial customers. Competes with Sunnen in select precision finishing machine categories, particularly for smaller diameter and high-mix applications.

Broad incumbents

• United Grinding Group: Large global manufacturer of precision grinding machines (surface, cylindrical, tool) under brands like Studer, Walter, and Schaudt. Overlaps with Sunnen in precision finishing for metalworking, though its portfolio is broader and centered on grinding rather than honing.
• Toyoda Grinding Machine: Japanese manufacturer of grinding and machining equipment for automotive and industrial customers. A broader incumbent in precision metalworking machinery that competes for some of the same bore finishing and grinding budget as Sunnen.

Emerging players

• KMT Grinding Technologies: Provider of precision grinding, honing, and polishing solutions, often integrated into automated manufacturing cells. Adjacent peer with partial overlap in finishing processes and consumables used alongside Sunnen's equipment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/sunnenproducts
• Facebookfacebook.com/sunnenproducts
• Xx.com/sunnen

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries12 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sunnen