Arrowsmith Engineering (Coventry) ltd
Direct employees
Turnover (reported)
Regional Markets
Asia, Africa, Europe, North America
Nuclear Contracting Tiers
Tier 4: Sub-component Suppliers/Distributors


  • SC21 Award - Silver
  • AS 9100
  • ISO 14001:2015
  • ISO 9001:2008

Arrowsmith Engineering (Coventry) ltd

Precision Machining

Precision Aerospace Engine Components


Arrowsmith Engineering specialises in machining fully certified and bonded components in titanium, nimonics, stainless steel, exotic metal and engineering plastics with the commitment to consistently manufacture and supply quality machined parts fully certified, on time, right first time.

Arrowsmith began as an aerospace machine workshop in 1967 and in 1970 received Rolls-Royce approval. Since then, Arrowsmith has been extensively involved in developing complex parts and has established itself as a strategic supplier within the aerospace supply chain. After being taken over in 1995 by the Aldridge family, the company has grown under the R-R Sabre 2 Model so that it now supplies to both the civil and defence aerospace industries. In 2017 the company was also incorporated into the ASG group; this has facilitated further growth and led to work such as converting development NPI parts into production parts for Rolls-Royce Trent 1000ten, RB3043, Pearl and Trent 7000 engines.

As a nominated key supplier, Arrowsmith is constantly introducing processes and lean techniques to improve our efficiency. These include SC21 and Customer led improvement projects and the installation of improved software systems including: IPI NPI, SPC, 8D, MRP System, Visual Fairs and CAD CAM Upgrades. On time in full delivery has risen to over 97% with a target of 99%. Quality to our customers is 99.8% with a target of 99.9%.
Capabilities include CNC Turning and Milling, Grinding, Thread Rolling and NDT services. Work is undertaken from the development stage through to production and after sales. The company can accommodate small and large production quantities, alien and stranger parts and fast reaction works. Arrowsmith also holds delegated FAIR authority and Classified status.

Through the combined use of specialist software, such as Visual IPI, and extensive knowledge and experience, Arrowsmith understands and can meet the demands of several industry sectors.

Arrowsmith holds accreditation from several bodies including SC21 Silver status and is proud to have been recognised as being committed to its workforce by being awarded the ‘Workplace Well Being National Charter Award’.

Products and Services

Product Sector
Precision & General Machining Aerospace - Civil and Defence
Inspection Equipments & Services including NDE & Surveillance Aerospace - Civil and Defence

High Precision CNC Turning 4 Axis: 1mm to 200mm diameter capacity
High Precision CNC Milling 5 Axis: Up to 500mm cube capacity
High Precision Conventional Turning
High Precision Conventional Milling

Cylindrical Grinding
Centre-less Grinding: From 1.5mm to 150 mm diameter
Internal Grinding: Up to 450 mm diameter
External Grinding: From 1.5 mm to 250 mm diameter and up to 1000 mm long
Surface Grinding
Tub Grinding: Max surface area of 450 mm x 250 mm
Automatic honing, including match grinding

Thread Rolling
Thread Cut up Testing Laboratory: Rolls Royce approved

2x Sawing Prosaw MEGA

Air Pressure Testing
Hydraulic Pressure Testing: 3000psi up to 800mm cube capacity
Magnetic Particle NDT Testing: (NADCAP)
Dye-penetrant NDT Testing: (NADCAP) up to 450mm x 300mm x 300mm capacity

Inspection Equipment
CMM covering Concentricity, True position and Flatness.
– Roundness measuring on Taylor Hobson machine.
– Optical Projectors
CAD/CAM Facility
3D Design capability
Electrolytic Data Matrix Marking
Dot Peen Data Matrix Marking
Ink Jet Part Marking

Site Facilities

Shop Floor

1394m2 -Alongside 6000 sqft of office space; there is currently 3000 sqft of floor space awaiting machinery and room to build further units on site.

Specialist Machinery

Capability Swing Length Width Weight
3 Axis Milling(Maximum travel on axes) x-axis: 510mm y-axis: 410mm z-axis: 383mm Min: - - - N/A
Max: - - - -
4 Axis Milling(Maximum travel on axes) x-axis: 800mm y-axis: 510mm z-axis: 337mm Min: - - - N/A
Max: - - - -
5 Axis Milling (Maximum travel on axes) x-axis: 846mm y-axis: 635mm z-axis: 488mm Min: - - - N/A
Max: - - - -
Horizontal Turning (CNC) Min: - - - N/A
Max: 637mm 1005mm 285mm -

Inspection / Testing

  • CMM machines
  • Non destructive testing - Magnetic Partical
  • Pressure / Hydro Testing
  • Temperature controlled facility for inspection


  • CAD Design - 2D
  • CAD Design - 3D
  • CAM Design - 2D
  • CAM Design - 3D

Recent Work

Ongoing Projects

Arrowsmith currently has over 20 ongoing development projects with various companies including:
DRAMA Additive Manufacturing project with MTC and MAA
Innovation Project on AM with MTC
Innovation project with Coventry University on Automation
MTC projects with MTC on Digitalisation
3 automation projects with Mills CNC

Arrowsmith continue to worki on developing pre-production parts for Rolls-Royce engines, RB3043, Pearl, the Trent 1000ten and Trent 7000.

Other ongoing work includes manufacturing components for Meggitt braking systems, GKN US, ITP Spain and C-Class parts for Trent XWB engines.

work has grown considerably with Pattonair