Finetech Engineering

Dumbbell Cutter

Compliant with ASTM D412 (Die A, B, C, D, E, F), ASTM D638 (Type I–V), and ISO 37 standards - supplied by a trusted dumbbell cutter manufacturer India
Hardened tool steel blade (50–56 HRC) - ideal as a dumbbell die cutter for rubber, plastic, and elastomers
Available as Type 1 Type 2 dumbbell cutter India and all other ISO 37 types for vulcanised rubber
NABL-traceable certification available - our ASTM D412 dumbbell cutter India is ready for audits and government tenders
Standard and custom sizes - leading dumbbell punch die manufacturer India with in-house precision machining

Overview

The Finetech Engineering Dumbbell Cutter is a precision die cutting tool used to prepare standard dumbbell-shaped (dogbone) test specimens for tensile strength testing. As a dedicated dumbbell cutter manufacturer India, we supply rubber tensile specimen cutter India solutions to labs and factories across the country. Accurate specimen preparation is the foundation of reliable tensile test results – if the specimen dimensions are inconsistent, even the best universal testing machine will produce unreliable data. Our dumbbell die cutter for rubber is manufactured from hardened tool steel (50–56 HRC) with precision-ground internal cutting edges, ensuring clean, burr-free cuts with exact dimensional accuracy. The cutting edge geometry is machined to match the exact profile specified in the relevant standard – whether that is ASTM D412 dumbbell cutter India for rubber and elastomers, ASTM D638 for rigid and semi-rigid plastics, or ISO 37 dumbbell cutter manufacturer requirements for vulcanised rubber. Each dumbbell punch die manufacturer India product is designed to be used with a hydraulic press, manual press, or pneumatic press to punch through sheet material cleanly and consistently. Finetech Engineering manufactures these cutters in-house at our Thane facility, which means we control dimensional accuracy from raw material to final inspection – and can offer NABL-traceable certification for customers who require it.

Specifications

Parameter	Specification
Product Name	Dumbbell Cutter (Dumbbell Punch Die Manufacturer India – Dogbone Die Cutter)
Standards Supported	ASTM D412 Dumbbell Cutter India (Die A, B, C, D, E, F) \| ASTM D638 (Type I–V) \| ISO 37 Dumbbell Cutter Manufacturer (Type 1 Type 2 Dumbbell Cutter India, 1A, 2, 3, 4) \| IS 3400 (Part 1)
Blade Material	Hardened tool steel (EN-31 / equivalent) – suited for dumbbell die cutter for rubber & plastics
Blade Hardness	50–56 HRC
Cutting Edge Finish	Precision ground and polished (minimum 5 mm from edge per ASTM D412)
Body Material	Mild steel (MS) body with machined handle
Operation	Used with Hydraulic Press / Manual Press / Pneumatic Press
Surface Treatment	Chrome plated / powder coated (as per model)
Certification	NABL-traceable certification available (dimensional verification)
Custom Sizes	Available as per customer drawing or specific standard requirement

Standard Dumbbell Die Dimensions — Quick Reference

Your QC team can use this table to select the correct cutter size for their test standard. Finetech – a leading dumbbell cutter manufacturer India – manufactures all sizes listed below.

For Rubber & Elastomers (ASTM D412)

Die Type	Overall Length (mm)	Narrow Section Width (mm)	Narrow Section Length (mm)	Gauge Length (mm)
Die A	101.6	6.35	31.75	25.4
Die B	152.4	6.35	31.75	25.4
Die C (Most Common)	115	6	33	25
Die D	115	3	16	12
Die E	101.6	12.7	31.75	25.4
Die F	63.5	4.76	9.53	7.62

For Plastics (ASTM D638) Dumbbell Cutter

Specimen Type	Overall Length (mm)	Narrow Section Width (mm)	Gauge Length (mm)	Thickness (mm)
Type I (Preferred)	165	13	50	≤7
Type II	183	6	50	≤7
Type III	246	19	50	7–14
Type IV	115	6	25	≤4
Type V (Micro)	63.5	3.18	7.62	≤4

For Vulcanised Rubber (ISO 37)

Specimen Type	Overall Length (mm)	Narrow Section Width (mm)	Gauge Length (mm)
Type 1	115	6	25
Type 1A	100	5	20
Type 2	75	4	12
Type 3	50	4	10
Type 4 (Micro)	35	2	10

Applications

Rubber tensile specimen cutter India - tensile strength testing of vulcanised rubber and thermoplastic elastomers (ASTM D412)
Testing of vulcanised and thermoplastic rubbers using ISO 37 dumbbell cutter manufacturer tooling
Tensile testing of vulcanised and thermoplastic rubbers (ISO 37)
Incoming raw material inspection at plastic and rubber manufacturing plants
Quality control testing in pipe, film, moulding, and extrusion factories
R&D labs characterising new polymer and elastomer formulations
Third-party testing laboratories requiring NABL-compliant specimen preparation - supplied by a certified dumbbell cutter manufacturer India
Preparing specimens for elongation, tensile set, and stress-strain testing using our dumbbell punch die manufacturer India tooling

Industries Served

Plastics manufacturing (pipes, films, bottles, automotive components)
Rubber manufacturing (seals, gaskets, hoses, O-rings, tyres) - primary use case for our dumbbell die cutter for rubber
Thermoplastic elastomers (TPU, TPE, silicone) - tested with rubber tensile specimen cutter India
Packaging (flexible films, laminates)
Textile and non-woven testing
Automotive and aerospace component testing
Pharmaceutical and medical device materials

Why Choose Finetech Engineering Dumbbell Cutters?

Manufactured in-house: We don’t trade or resell – as a dedicated dumbbell cutter manufacturer India, every dumbbell cutter is manufactured at our Thane facility. This means we control quality from raw material to final inspection.

NABL certification available: We provide NABL-traceable dimensional certification for our ASTM D412 dumbbell cutter India and all other specimen cutters – essential for labs participating in government tenders (GeM), NABL-accredited labs, and export-facing manufacturers.

Custom sizes: Need a non-standard dumbbell cutter or a dumbbell punch die manufacturer India to make a die matching a client-specific drawing? We manufacture custom specimen cutters to your exact requirements.

Re-sharpening service: Over time, cutting edges on any dumbbell die cutter for rubber or plastic dull with repeated use. We offer re-sharpening and re-certification services to extend the life of your cutters.

Our Products

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Customisation available

Common Questions

Frequently Asked Questions

What is a dumbbell specimen cutter?

A dumbbell cutter (also called a dumbbell punch die manufacturer India product or dogbone die cutter) is a precision tool used to cut standardised dumbbell-shaped test specimens from flat sheets of rubber, plastic, or elastomer material. The dumbbell shape ensures that when the specimen is pulled in a tensile testing machine, it breaks in the narrow gauge section - not at the grips - giving accurate and repeatable results.

Which standard should I follow — ASTM D412 or ASTM D638?

It depends on your material. ASTM D412 dumbbell cutter India tooling is used for vulcanised rubber and thermoplastic elastomers. ASTM D638 is for rigid and semi-rigid plastics. If you test both rubber and plastic, you will need both types of dumbbell cutter from a dumbbell cutter manufacturer India.

What is the most commonly used die type?

For rubber testing, ASTM D412 dumbbell cutter India Die C is the most widely used dumbbell die cutter for rubber globally. For plastic testing, ASTM D638 Type I is the preferred specimen.

Do you provide NABL certification for dumbbell cutters?

Yes. Finetech Engineering offers NABL-traceable dimensional certification for our dumbbell cutter range - whether ASTM D412 dumbbell cutter India, ISO 37 dumbbell cutter manufacturer products, or Type 1 Type 2 dumbbell cutter India tooling.

What press do I need to use with these cutters?

Dumbbell cutter tooling is used with a hydraulic press, manual press, or pneumatic press. Finetech Engineering manufactures all three types - ask us for a combined quote if you need a dumbbell punch die manufacturer India press package.

Can you make custom-size dumbbell cutters?

Yes. As a dumbbell cutter manufacturer India with in-house machining, we can manufacture custom dumbbell cutter sizes to your exact dimensions. Contact us with your requirements.

What is the difference between a dumbbell cutter and a dogbone cutter?

They are the same thing. Dumbbell cutter and dogbone cutter are two names for the same type of specimen cutting die. In India, "dumbbell cutter" is the more common term used by rubber tensile specimen cutter India suppliers; internationally, "dogbone" is also widely used.

What is an ISO 37 dumbbell cutter?

An ISO 37 dumbbell cutter manufacturer produces tooling that conforms to the ISO 37 standard for tensile properties of vulcanised and thermoplastic rubbers. As a Type 1 Type 2 dumbbell cutter India supplier, Finetech manufactures all ISO 37 type sizes - Type 1, 1A, 2, 3, and 4.