Spiro Gears

What Spiro Gears does

Spiro Gears is a privately held, family-owned Indian precision gear manufacturer founded in 1996, headquartered in Bengaluru with a second manufacturing facility in Pune opened in 2017. The company produces custom gears and sub-assemblies on a made-to-order basis for industrial OEM customers, spanning fourteen distinct product lines including ground cylindrical gears (down to DIN Q5 tolerance), gear shafts, planetary gears, bevel gears (including small spiral bevel gears cut on Klingelnberg machines using the cyclo-palloid method), pump gears, internal and external ring gears (up to 800 mm), splined shafts, sprockets, worm gear sets, and high-profile crowning gears. Production is built around gear hobbing, broaching, shaping, shaving, and tooth profile grinding, with quality management under Six Sigma and ISO 9001:2015 certification, supported by a KAPP NILES KNM 2X CNC gear measuring machine for in-house inspection and reverse-engineering services.

The company monetizes primarily through custom hardware sales (made-to-print gears and gearboxes to AGMA, BS, DIN, ISO, JIS, or customer specifications), complemented by three fee-based service lines: gear inspection on the KAPP NILES platform, reverse engineering of unknown or worn gears, and pre-profiling of gear grinding wheels using German and Swiss diamond dressers. Go-to-market is B2B direct sales led by a Head of Business Development, supplemented by recurring trade-show participation (IPTEX in India, Hannover Messe in Germany, IESS X in Chennai), a corporate website with enquiry form, and a LinkedIn presence. Pricing is quote-based and not publicly disclosed, varying by part geometry, volume, tolerance class, material, and finishing process.

Spiro's named customer base includes large industrial OEMs such as Bonfiglioli, Carraro, Mahindra CIE, RSB Transmission, Ralli Wolf, and Volvo, alongside ABS and KTTM, across verticals including gear-box manufacturing, automotive driveline, earthmoving and construction equipment, agriculture, hydraulic and gear pumps, machine tools, injection moulding, portable power tools and e-vehicles, and textile/printing/packaging machinery. The company employs 51–100 people, holds no disclosed external institutional capital, and reports no AI, software, or platform capabilities in its offering.

Name

Spiro Gears

Legal name

Spiro® Gears

Website

https://spirogears.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Headquarters

HQ city

Bengaluru

HQ country

India

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Gear Manufacturing: Core revenue stream of made-to-order custom gears manufactured to AGMA, BS, DIN, ISO, JIS, and customer specifications. Includes bevel gears, ground cylindrical gears, planetary gears, pump gears, internal gears, external ring gears, gear shafts, splines, shaved gears, sprockets, toothed pulleys, worm and worm wheels, and high profile crowning gears. Made-to-print custom orders.
2. Customized Gear Boxes and Sub-Assemblies: Customized gear boxes (single-stage to 3-stage reduction) with fabricated or casted housings, plus complete sub-assemblies (multiple gears fitted on shafts with bearings), built per client designs and specifications.
3. Gear Inspection Services: Fee-based inspection services performed on KAPP NILES KNM 2X CNC gear measuring machine, covering gear geometry, GD&T, splines, bevel gears, cutters, and worm/wheel inspections.
4. Pre-Profiling of Gear Grinding Wheels: Service offering for pre-profiling gear grinding wheels on a dedicated CNC profiling machine using high-precision diamond dressers from Germany and Switzerland.
5. Reverse Engineering Services: Service for de-constructing, measuring, and reproducing unknown or worn gears using CNC inspection equipment, with optional follow-on manufacturing.

Go-to-market motion3 records

Distribution channels1 record

Marketing channels6 records

Core offering

Spiro Gears manufactures custom precision gears, gear boxes, and sub-assemblies to client designs and industry standards (AGMA, BS, DIN, ISO, JIS) at its two Indian plants in Bengaluru and Pune. The portfolio spans ground cylindrical gears, gear shafts, planetary, bevel, internal, external ring, pump, shaved, spline, sprocket and toothed pulley, worm, and high-profile crowning gears, produced through hobbing, shaping, shaving, grinding, and broaching. The company also provides three value-added technical services: precision gear inspection on a KAPP NILES KNM 2X CNC measuring machine, reverse engineering of unknown or worn gears, and pre-profiling of gear grinding wheels.

Product overview

Spiro Gears operates as a single, integrated gear-manufacturing business (not a multi-product software platform with add-on modules) that produces a portfolio of precision gears and related value-added services from two Indian plants. The portfolio comprises fourteen distinct gear-product lines — Customized Gear Boxes, Sub Assemblies, Ground Cylindrical Gears, Gear Shafts, Shaved Gear Wheels & Shafts, Planetary Gears, Pump Gears, External Ring Gears, Internal Gears, Bevel Gears, Spline Shafts and Rings, Sprockets & Toothed Pulleys, Worm & Worm Wheels, and High Profile Crowning Gears — that share common gear-cutting, -shaping, -shaving, -grinding, and inspection capabilities. These gear products are complemented by three technical services — Gear Inspection (using a KAPP NILES KNM 2X), Reverse Engineering, and Pre-Profiling of Gear Grinding Wheels — that together serve OEM customers in automotive, construction, agriculture, industrial machinery, portable power tools, e-vehicles, textile, printing, packaging, and machine-tool sectors worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Customized Gear Box Client-designed custom gearboxes from single-stage up to 3-stage reduction, manufactured using certified raw materials, calibrated heat-treatment furnaces, specialised gear cutting and thread grinding machines, and proper-assembly fixtures to deliver uniform backlash and smooth running; housings can be fabricated or cast as per customer requirement. Built for industrial OEM customers.
• Sub Assemblies Custom helical and spur gears assembled onto shafts, or as gear-shaft-with-bearing sub-assemblies for OEMs serving automotive, printing, textile, and packaging industries.
• Ground Cylindrical Gears Custom-made precision-ground spur and helical gears in case-hardening steels (20MnCr5, 17CrNiMo6, SAE8620) meeting DIN tolerances up to Q5, with capacity for high-volume orders of up to 60,000 units per year. Serves automotive, industrial equipment, machinery, compressors, gear boxes, and automation customers.
• Gear Shafts Gear shafts (spur or helical), precision-cut, shaved, or ground per application in case-hardening steels (20MnCr5, 17CrNiMo6, SAE8620) or direct-hardening steels (42CrMo4, C45). Used in pumps, gear boxes, power tools, PTOs, agriculture, and textile machinery.
• Shaved Gear Wheel & Shaft Shaved gear wheels and shafts produced per customer specification at DIN Q8–Q9 tolerance. Used in tractors, pumps, PTOs, automotive, machinery, and gear boxes where moderate noise levels are acceptable.
• Planetary Gear Precision-cut, shaved, or ground spur planetary gears used with sun and ring gears for higher speed reduction in sugar, earth-moving, mining & construction machinery, and special gear boxes.
• Pump Gear Both driver and driven gears for internal and external gear pumps in spur or helical, integral-shaft or ground-bore styles; ground or shaved tooth profiles for minimal pulsation and improved life cycle, at DIN Q6–Q9 tolerance. For gear-oil and hydraulic pump OEMs.
• External Ring Gear Small to large diameter external ring gears (up to 800 mm) for injection moulding machines and large gear drives, soft or case-hardened up to 30–35 HRc, precisely hobbed or shaped.
• Internal Gear Internally cut gears produced by shaping process for special gear drives, planetary gear boxes, and machine tools.
• Bevel Gear Straight and spiral bevel gears for motion transmission between intersecting shafts; spiral bevel gears are cut on Klingelnberg machines using the cyclo-palloid method, with module from 0.8 to 1.50 mm and diameters up to 110 mm, for portable angle grinders, switch-gear circuit breakers, and similar applications in small and medium batches.
• Spline Shafts and Rings Custom external and internal splines manufactured by hobbing, shaping, broaching, or CNC wire-cutting, up to DIN 5 accuracy, for torque-transmission applications.
• Sprocket & Toothed Pulleys Sprockets and toothed (timing-belt) pulleys; sprockets in medium-carbon induction-hardened steel and pulleys in aluminium with steel flanges, for machine tools, conveyors, and material-handling systems.
• Worm and Worm Wheels Custom worm and worm-wheel sets produced by hobbing, turning, milling, or grinding the worm, used in presses, small engines, lifts/elevators, rolling mills, conveying equipment, mining machinery, rudders, and worm-drive saws.
• High Profile Crowning Gears Precision-cut gears with very high profile crowning produced on CNC hobbing machines with dedicated software, in case-hardening steel with toughened core, for heavy-duty gear boxes in concrete-mixing plants.
• Gear Inspection Metrology service on a KNM 2X CNC Gear Measuring Machine from KAPP NILES Metrology GmbH, Germany, covering external/internal cylindrical gear inspection (lead, profile, pitch, runout, tooth thickness, crowning, relief, tip/root diameter, twist), spline, bevel, hob/shaving/shaping cutter, gear-shaft GD&T, and worm/wheel inspections. Available as a third-party inspection service.
• Reverse Engineering Reverse-engineering service that uses advanced CNC measuring and inspection tools to determine the exact gear geometry of an unknown or worn gear, with optional re-manufacture to original specification.
• Pre Profiling of Gear Grinding Wheels Service for pre-profiling gear-grinding wheels on a dedicated CNC profiling machine using high-precision profiling diamond dressers from Germany and Switzerland, covering worm grinding wheels of Module 0.70–7.0 mm, 1–7 starts, 240–350 mm diameter, up to 230 mm width.

Quantifiable outcome

• Optimum factory lot sizes of up to 60,000 units per year for ground cylindrical gears
• +1 more outcomes

Named customers8 records

Segments9 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Three partnerships are on record, tiered core.

• KAPP NILES Metrology GmbHcoreTechnology or IntegrationSpiro Gears performs gear inspection on the latest-generation CNC Gear Measuring Machine KNM 2X from KAPP NILES Metrology GmbH, Germany. The company offers this as an in-house gear inspection service for external/internal cylindrical gears, splines, bevel gears, cutters, GD&T parameters, and worm/wheel inspection. The relationship underpins the company's precision-gear inspection capability.
• KlingelnbergcoreTechnology or IntegrationSpiro Gears uses Klingelnberg machines to cut spiral bevel gears using the cyclo-palloid method, with capabilities including diameters up to 110 mm and module from 0.8 to 1.50 mm. The relationship is central to the company's specialization in small spiral bevel gears.
• German and Swiss high-precision profiling diamond dresser supplierscoreOthersSpiro Gears uses high-precision profiling diamond dressers sourced from Germany and Switzerland on its dedicated CNC profiling machine to offer pre-profiling services for gear grinding wheels. The supplier brands are not individually named in the source.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Regional players

• Sansera Engineering: Indian precision-machined components and sub-assemblies supplier serving automotive and industrial OEM customers. Comparable on precision machining capability and Indian automotive OEM customer base, though broader product scope.

Others

• Klingelnberg: German manufacturer of bevel gear cutting machines and metrology. Technology partner to Spiro for cyclo-palloid spiral bevel gear production; comparable as a gear technology specialist with adjacent gear manufacturing exposure.

Direct peers

• Shanthi Gears: Indian listed gear manufacturer producing a wide range of custom and standard gears, gearboxes, and sub-assemblies for industrial OEMs. Most direct comparable on product portfolio, customer mix, and Indian manufacturing footprint.
• Rana Precision Gear Industries: Indian custom gear manufacturer producing precision ground gears, gear shafts, and spline shafts. Comparable on custom-spec precision gear manufacturing for industrial OEM customers in India.
• David Brown Gear Systems: Specialist manufacturer of engineered gears and gearboxes for heavy industrial applications. Comparable as a focused gear specialist serving industrial OEM customers with custom engineered solutions.
• Elecon Engineering: Large Indian manufacturer of industrial gears, gearboxes, and custom engineered power transmission products serving mining, cement, steel, and material handling. Direct peer with broader product range and larger scale.

Broad incumbents

• SEW-Eurodrive: Global leader in drive technology, gear motors, and industrial gear units. Broad incumbent offering integrated drive systems that overlap with Spiro's gearbox and sub-assembly product lines.
• Bonfiglioli: Italy-headquartered global leader in gearboxes, drive systems, and gear manufacturing for industrial, wind, and mobile applications. Functions as both a Spiro customer and a benchmark incumbent for gear manufacturing scale.
• Flender (Siemens): German-based mechanical power transmission specialist under Siemens, producing gear units and couplings for industrial applications. Comparable on precision gear technology and global OEM customer base.
• ZF Wind Power (ZF): Global technology group with a substantial industrial gear and planetary gear business serving wind, marine, and industrial markets. Broad incumbent that competes for high-precision gear contracts at industrial OEMs.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/spiro-gears

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Spiro Gears