What Kasuga Kogyo does

Kasuga Kogyo Co., Ltd. (株式会社春日工業所) is a privately held Japanese precision metal parts manufacturer founded in October 1946 and incorporated in 1958. The company operates from a Tokyo headquarters in Chofu City (sales, purchasing, and administration) and a primary production facility in Motomiya, Fukushima Prefecture (3,484 sqm factory on a 21,044 sqm site), with 68 employees as of March 2021 and registered capital of 70 million JPY. It is led by Representative Director Takei Shinya, who has held the position since February 2004.

The company's core offering is integrated precision metal machining — covering material/component procurement, CNC turning and milling (55 NC lathes and 33 machining centers including 5-axis machines), heat treatment, grinding, surface treatment, welding, in-house painting and balancing, and final assembly — for safety-critical powertrain, drivetrain, chassis, and engine components. Key products include gear shift assemblies, bearing retainers, crankshaft pulleys, flywheels, exhaust manifolds, input covers, brackets, and V-belt pulleys, plus aluminum hinges for railway platform screen doors. The company holds ISO 9001 (April 2013) and ISO 14001 (May 2005) certifications.

Kasuga Kogyo generates revenue through direct B2B transactional supply contracts as a Tier-1/Tier-2 OEM parts supplier to major Japanese manufacturers in the truck and bus, construction and earthmoving equipment, machine tool, industrial fan/blower, and metal fabrication sectors. Named enterprise customers include Mitsubishi Fuso Truck and Bus Corporation and Komatsu Ltd. as primary accounts, with additional supply relationships to Amada, Asada Seisakusho, Mitsuya Blower, Futamiya Kogyo, Hirano Seisakusho, Koyama Corporation, Techno Metal, Uchimura, and Yamato Inttec. Distribution is exclusively direct-to-OEM with no intermediary or e-commerce layer. The company operates a subsidiary, Toji Manufacturing Co., Ltd. (established 1973), and is privately held with no disclosed institutional investors or parent company.

Name

Kasuga Kogyo

Legal name

株式会社春日工業所

Website

https://kasuga-kogyo.co.jp

Company type

Private

Founded year

1946

Operating status

Operating

Short description

Kasuga Kogyo is a Japanese precision metal parts manufacturer founded in 1946, supplying safety-critical powertrain, drivetrain, and engine components to major truck, bus, and construction equipment OEMs including Mitsubishi Fuso and Komatsu via integrated CNC machining and in-house assembly.

Ownership category

akta.pro rank

Product category

Precision Metal Parts Manufacturing

NAICS

Machinery Manufacturing (333)

SIC

Screw Machine Products (3451)

akta.pro primary industry

Truck Body & Upfit Manufacturing (Box/Dump/Service/Refuse) (IMACAGAC)

Keywords

• Precision metal machining
• CNC turning services
• Automotive OEM parts
• Construction machinery components
• Transmission parts manufacturing

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Automotive & Construction Machinery Parts Manufacturing: Kasuga Kogyo generates revenue through the manufacture and sale of precision metal parts — primarily axle components, transmission parts, engine parts, and chassis parts — to truck/bus and construction equipment OEMs. Revenue is derived from long-term supply contracts with major manufacturers, billed per-part on a transactional basis. The company also handles in-house painting and balancing for certain product lines.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Kasuga Kogyo manufactures precision-machined metal parts — primarily axle components, transmission assemblies, engine parts, and chassis components — for Japanese truck and bus OEMs (Mitsubishi Fuso) and construction equipment manufacturers (Komatsu). The company operates an integrated one-stop production system covering material procurement, CNC turning and 5-axis machining, heat treatment, grinding, surface treatment, painting, balancing, and final assembly, enabling it to deliver safety-critical components from small prototype runs through high-volume production.

Product overview

Kasuga Kogyo is a precision metal parts manufacturer serving the automotive (trucks, buses), construction machinery, and railway sectors. The company offers a comprehensive portfolio of machined metal components including gear shift assemblies, bearing retainers, pulleys, flywheels, transmission covers, and platform door hinges. As a single unified manufacturing operation rather than a software platform, the products are physical industrial components organized by application category: axle related parts, chassis parts, engine parts, transmission parts, and railway related parts. The company emphasizes its integrated production capability covering sourcing, machining, heat treatment, grinding, surface treatment, and assembly.

Differentiator

Problem solved

Functional benefit

Products and services

• Bearing Retainer (ベアリングリテーナー) Small truck axle-related component that attaches to the differential case and holds rollers serving as bearings for straight shafts. Manufactured for Japanese truck and bus OEMs.
• Bracket (ブラケット) Small 2-3 ton dump truck chassis-related component that attaches to the chassis frame. Manufactured for Japanese truck OEMs.
• Crankshaft Pulley (クランクシャフトプーリー) Truck and industrial engine component attached to the crankshaft that drives fans and pumps via V-belt grooves. Kasuga Kogyo handles machining, balancing, and painting in-house.
• Gear Shift Assembly (ギアシフトASSY) Truck transmission component that attaches to the top of manual transmission gearboxes to transmit gear shifting. Produced for small, medium, and large vehicles, with major components machined in-house and final assembly performed by Kasuga Kogyo.
• Front Retainer (フロントリテーナー) Truck transmission component that holds the release bearing, which slides over it, attaching to the front of the transmission gear case. Manufactured for truck OEMs.
• Input Cover (インプットカバー) Truck axle component used in double-differential rear axle configurations with two rear axles. Manufactured for Japanese truck OEMs.
• Rear Cover Assembly (リヤカバーASSY) Transmission component that attaches to the rear of the transmission gear case. Manufactured and assembled by Kasuga Kogyo for truck transmission applications.
• Flywheel (フライホイール) Construction machinery engine component. Customers attach gears and mount it to the rear of the engine. Manufactured for construction equipment OEMs such as Komatsu.
• Exhaust Manifold (排気マニホールド) Construction machinery engine component that combines multiple exhaust flow paths into one. Large engines use combinations of multiple manifolds. Manufactured for construction equipment OEMs.
• Hinge (ヒンジ) Railway component used inside the platform-side door of station platform safety gates that open and close in conjunction with train doors. Primarily aluminum with some steel variants.
• V-Belt Pulley (Vベルトプーリー) Air compressor component — specifically a V-belt pulley for reciprocating-type compressors. Manufactured for industrial air compressor and blower OEMs.

Quantifiable outcome

• 55 CNC lathe machines + 33 machining centers operating in a single integrated facility
• +1 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves6 records

Expansion highlights3 records

Direct peers

• Fuji Die Co., Ltd. Japanese precision components manufacturer specializing in highly engineered metal parts for automotive, industrial, and electronics applications; comparable in precision metal component focus and Japanese customer base.
• Musashi Seimitsu Industry Co., Ltd. Japanese precision components manufacturer supplying powertrain and transmission parts to automotive OEMs globally; similar precision-machined product portfolio and Japanese OEM customer base.
• H-One Co., Ltd. Japanese precision metal stamping and welding supplier of frame and chassis components to truck and auto OEMs; closely comparable as a tier-1/2 component supplier serving commercial vehicle programs in Japan.
• Tokushu Kinzoku Kogyo Co., Ltd. (Tokkin): Japanese manufacturer of precision metal stamping and machined components for automotive and industrial applications; closely comparable as a precision metal parts supplier to Japanese OEMs.
• Sugino Machine Limited: Japanese precision machining equipment and machined components maker serving automotive, industrial, and clean-energy customers; comparable in advanced CNC machining capabilities and Japanese industrial OEM customer base.
• TBK Co., Ltd. Japanese listed precision machining manufacturer supplying engine, powertrain, and chassis components to commercial vehicle and construction equipment OEMs — directly comparable end markets and product overlap with Kasuga Kogyo.
• Hirata Corporation: Japanese manufacturer of precision metal stamping, machining, and assembly products serving automotive and industrial customers; directly comparable in process technology and end-market mix.

Emerging players

• Union Tool Co. Japanese manufacturer of precision tools and wear-resistant components for industrial and electronics applications; partial overlap in precision machining technology and Japanese B2B customer focus.

Broad incumbents

• Aisin Corporation: Major Japanese tier-1 automotive parts maker producing drivetrain, engine, and chassis components for global OEMs; broader portfolio overlap with Kasuga's powertrain and chassis parts but at vastly greater scale.
• Toyota Industries Corporation: Diversified Japanese manufacturer with automotive parts, materials handling, and engine/powertrain businesses; significant overlap in commercial vehicle engine and powertrain components but at much larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 Kasuga Kogyo