HSS Spline Broaches — DIN 5480 / ASA B92.1 / JIS

Spline Broach Manufacturer — Involute & Straight-Sided

Precision involute and straight-sided spline broaches manufactured to DIN 5480, ASA B92.1, and JIS standards. Module range 0.5–10, pressure angles 30°/37.5°/45°. M35 and ASP2030 HSS for maximum tool life in EV and automotive applications.

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Quick Specifications

Material	M35 / ASP2030 High Speed Steel
Spline Type	Involute / Straight-sided
Standard	DIN 5480 / ASA B92.1 / JIS
Module Range	0.5 – 10
Pressure Angle	30° / 37.5° / 45°
Lead Time	Standard: 2–3 weeks \| Custom: 3–5 weeks

Product Range

Types We Manufacture

All types manufactured from certified M2, M35, and ASP2030 High Speed Steel with full dimensional inspection on every batch.

Involute Spline Broaches

Broaches for involute spline profiles — the most common spline type in automotive and industrial applications.

Module: 0.5–10, PA: 30°/37.5°/45°

Straight-Sided Spline Broaches

6-tooth and 10-tooth SAE straight-sided spline broaches for heavy-duty power transmission.

SAE 6-spline, 10-spline

DIN 5480 Spline Broaches

German standard involute spline broaches — widely used in European automotive and industrial gearboxes.

DIN 5480 Standard

ASA B92.1 Spline Broaches

American standard involute spline broaches for US OEM and aerospace supply chains.

ASA B92.1 Standard

EV Drivetrain Spline Broaches

High-precision spline broaches for electric vehicle transmission and motor coupling applications.

High-precision EV grade

Custom Spline Broaches

Non-standard spline profiles, special modules, or unusual pressure angles to buyer drawing.

To Drawing / DXF / STEP

Industries We Serve

Applications

Trusted by Honda, Maruti Suzuki, Mahindra, HAL, Ordnance Factory India, and 100+ manufacturers worldwide.

EV Drivetrains

Spline broaches for electric vehicle motor shafts, reduction gear hubs, and transmission couplings.

Automotive Gearboxes

High-volume spline broaching for passenger car and commercial vehicle gearbox components.

Aerospace Couplings

Precision spline broaches for aerospace drive shaft couplings — HAL and defence applications.

Transmission Hubs

Spline broaches for transmission hub bores in manual, automatic, and CVT gearboxes.

Industrial Drives

General industrial spline broaching for heavy machinery, crane drives, and industrial gearboxes.

Agricultural Machinery

Spline broaches for tractor and harvester drivetrain components.

Technical Data

Full Specifications

Standard range specifications. Custom sizes and profiles manufactured to your drawing — send us your requirement.

Standard / Module	Profile	Tolerance	Material
DIN 5480 — Module 0.5	30° pressure angle, involute	H7	M35/ASP2030
DIN 5480 — Module 1.0	30° pressure angle, involute	H7	M35/ASP2030
DIN 5480 — Module 2.0	30° pressure angle, involute	H7	M35/ASP2030
DIN 5480 — Module 3.0	30° pressure angle, involute	H7	M35/ASP2030
DIN 5480 — Module 4.0	30° pressure angle, involute	H7	M35/ASP2030
ASA B92.1	37.5° or 45° PA, involute	Custom	M35 HSS
SAE Straight-Sided	6 or 10 tooth series	Custom	M2/M35 HSS

FAQ

Frequently Asked Questions

What is a spline broach?

A spline broach is a multi-tooth cutting tool used to machine internal spline profiles — either involute (curved tooth form) or straight-sided — in bores. The broach is pushed or pulled through the workpiece bore, with each tooth removing a precise amount of material until the complete spline profile is formed. Spline broaches are used extensively in automotive gearboxes, EV drivetrains, aerospace couplings, and industrial power transmission.

What is the difference between involute and straight-sided splines?

Involute splines have teeth with an involute profile (like gear teeth), providing excellent load-sharing and self-centering. They are the most common type in modern automotive and industrial applications. Straight-sided splines (SAE) have flat, parallel-sided teeth and are used in older designs and heavy-duty applications where simpler manufacturing was preferred. SK Broach manufactures both types.

What materials are your spline broaches made from?

SK Broach uses M35 Cobalt HSS as standard for spline broaches due to the demanding cutting conditions (interrupted cut across multiple teeth). ASP2030 powder metallurgy HSS is available for maximum tool life in high-volume production. Both materials are heat treated to 63–66 HRC.

Can you make spline broaches for EV applications?

Yes. We supply spline broaches for electric vehicle drivetrain components including motor shaft splines, reduction gear hubs, and differential couplings. EV applications often require tighter tolerances — contact us with your drawing and we will confirm capability.

Do you supply spline broaches to the aerospace industry?

Yes. We are an approved vendor for HAL (Hindustan Aeronautics Limited) and Ordnance Factory India. We supply spline broaches for aerospace coupling and transmission applications with full material certification and inspection documentation.

What is the typical lead time for spline broaches?

Standard DIN 5480 / ASA B92.1 modules in our standard range: 2–3 weeks. Non-standard modules, special pressure angles, or custom profiles: 3–5 weeks. Contact us for your specific requirement.

Get a Quote for Spline Broach Manufacturer

Send us your drawing, dimensions, or requirements. We respond within 24 hours with a competitive quotation — guaranteed.

+91 92160 03315 (India)

+49 151 28978684 (Germany)

info@skbroach.com

Drawings can be sent to info@skbroach.com in DXF, PDF or STEP format.

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