Grinding

At Llewellin’s Gears, we offer comprehensive precision grinding services, including surface, cylindrical, form, worm, and internal grinding. Our advanced equipment and experienced technicians allow us to deliver extremely tight tolerances, exceptional surface finishes, and complex geometries with consistency and accuracy.

Materials

Steels
Hardened Steels
Stainless Steels
Tool Steels
Carbide
Titanium & Exotic Alloys
Brass, Bronze & Copper

Methods

Surface Grinding (Horizontal & Ring): Flat surface finishing with high flatness and parallelism.

External Cylindrical Grinding: External round component grinding, ideal for shafts.

Internal Cylindrical Grinding: Precision grinding of bores, bearing seats, and internal contours in hardened or difficult-to-machine components. Ideal for high concentricity and fine surface finishes in tight spaces.

Tool and Cutter Grinding: Sharpening and reconditioning of cutting tools.

Capacity

Surface Grinding: Up to Ø600mm x 300mm
Cylindrical Grinding: Up to Ø300mm x 2000mm
Internal Grinding Bores: Up to 1270mm x 660mm

Close-up of a cylindrical metal workpiece being machined on an industrial lathe or grinding machine, with sharp, reflective surfaces and mechanical components visible.

Applications

Precision Shafts & Bushings
Gear Components
Bearings & Bearing Housings
Transmission Parts
Hydraulic & Pneumatic Fittings
Medical & Aerospace Parts

Quality Assurance

All grinding operations are conducted in line with our ISO 9001:2015 certified quality system. Parts are rigorously inspected using precision internal gauges, micrometres, and surface roughness testers to meet your exact specifications.

Other Capabilities

Broaching

Llewellin’s Machine Company Ltd excels in broaching, a precise machining process used to cut complex profiles, keyways and splines in gears and components. Our state-of-the-art horizontal and vertical broaching machines adhere to ISO 9001 standards, ensuring tight tolerances and exceptional finish quality.

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Gear Cutting

Established in 1883, Llewellin’s has been at the forefront of Britain’s gear manufacturing industry for over a century.

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Gear Grinding

Llewellin’s specialises in precision gear grinding, a vital process in the manufacture and finishing of gears for optimal performance.

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Gearbox Refurbishment

At Llewellin’s, we pride ourselves on being a leader in the design, manufacture, and refurbishment of precision gears, gearboxes, and transmission systems.

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Crane Winch Refurbishment

At Llewellin’s, we combine over a century of expertise in the design, manufacture, and maintenance of offshore winches and gearboxes.

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Reverse Engineering

Llewellin’s reverse engineering capability empowers clients to replicate and enhance legacy components, particularly when original designs or tooling are unavailable. Using advanced metrology equipment, including coordinate measuring machines (CMMs) compliant with ISO 10360-2 standards, we create precise 3D models of existing components.

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Slotting

Llewellin’s slotting capabilities enable precision machining for internal keyways, grooves and slots in gears, pulleys and other critical components. Using high-precision vertical slotting machines, we meet tight tolerances in compliance with BS ISO 286 standards.

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Spline Cutting

Llewellin’s are proud to have become recognised as leaders in precision spline cutting and gear manufacturing since first forming back in 1883.

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Tooth Rounding

Llewellin’s tooth rounding capabilities ensure gears meet stringent performance and durability standards, the kinds required in industries such as aerospace, rail and renewable energy.

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Turning & Milling

Our turning and milling capabilities allow us to produce high-precision components for UK clients positioned across a diverse range of sectors, including defence, aerospace and mining.

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Wire Erosion

Llewellin’s Machine Company Ltd is highly proficient in the science of wire erosion, a capability offering unparalleled precision in machining intricate geometries and fine tolerances.

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Provide a first class service from a long standing professional company run by experienced and proper people. Many thanks for the parts remade for my vintage Peugeot Bebe.