Understanding “what is a machine knife industrial cutting”: a straight blade (also called a machine knife, flat knife, or industrial knife) is the most fundamental and versatile industrial cutting tool. As a trusted industrial flat knives manufacturer India, Finetech manufactures rectangular pieces of hardened steel designed to cut in a linear motion – guillotine knives in paper mills, cross-cut blades in packaging lines, chopping knives in food factories, shear blades in steel service centres, and sheeter knives in corrugated plants.
Finetech Engineering manufactures straight blades up to 4,500 mm long in a single piece. We grind all four edges to precision tolerances, drill mounting holes to your machine’s bolt pattern, and heat-treat to the hardness required for your specific application. From a 50 mm food-portioning blade in food-grade stainless steel to a 3,000 mm paper sheeter knife in tungsten-carbide-inlaid tool steel, we manufacture the full range.
As a leading machine knives manufacturer India and granulator blades manufacturer India, Finetech controls what makes one straight blade different from another: the steel grade (edge life and toughness), the edge geometry (bevel angle, single or double bevel), and dimensional accuracy (a blade 0.1 mm out of straight over 1,000 mm will produce uneven cuts) – all controlled at our Thane facility.
Note: For blades over 2,000 mm, CNC surface grinding ensures flatness that cannot be achieved with manual grinding. As a trusted metalworking shear straight blades manufacturer India and long-blade specialist, all Finetech long blades are CNC ground.
Application | Blade Description | Edge Type | Typical Length |
Cross-cut / cut-off | Straight blade mounted perpendicular to material web; single-stroke cut | Single bevel, sharp | 200–1,500 mm |
Sheeter knife | Long blade in a sheeter/cutter; cuts sheets from continuous web | Double bevel or single bevel | 500–3,000 mm |
Heavy-duty straight blade; vertical drop cut through stacked material | Ground on all 4 edges | 500–4,500 mm | |
Chopping / portioning | Short to medium blade; rapid up-down chopping action | Smooth or serrated | 100–600 mm |
Trim knife | Edge trim blade; removes waste edges from web or sheet | Single bevel, very sharp | 200–1,000 mm |
Granulator / shredder blade | Fixed blade in granulator chamber; works with rotating rotor knives | Double bevel | 200–1,200 mm |
Doctor blade / scraper | Thin flexible blade; scrapes material from roller surfaces | Thin edge, polished | 200–2,500 mm |
Blade Material | Hardness | Edge Life | Best For |
Carbon steel (C45/C75) | HRC 50–55 | Short | Budget applications, soft materials, low speed |
Tool steel (D2) | HRC 58–62 | Long | Paper, packaging, textile, rubber — the industry workhorse |
HSS (M2) | HRC 62–65 | Very long | High-speed cutting, synthetic materials, abrasive webs |
Stainless steel (SS 420/440C) | HRC 52–58 | Moderate | Food processing — corrosion-resistant, food-safe |
Tungsten carbide (solid or inlaid) | HRC 85–92 | Extremely long | Highly abrasive materials (coated paper, fibre cement, composites) |
Tip: Not sure which material? As your trusted food processing straight knives manufacturer India and material specialist, Finetech will recommend the right steel grade. Tell us what you cut, the cutting speed, and how many shifts per day.
Parameter | Specification |
Maximum blade length | 4,500 mm (single piece) |
Width range | 10 mm to 200 mm |
Thickness range | 0.5 mm to 50 mm |
Steel grades | C45, C75, D2, M2 (HSS), O1, SS 420, SS 440C, tungsten carbide |
Heat treatment | In-house hardening, tempering, cryogenic treatment; HRC 50–65 |
Edge geometry | Single bevel, double bevel, chisel, custom angles (15°–45° typical) |
Surface finish | Fine ground, mirror polish, chrome plated, TiN coated |
Mounting | Holes, slots, keyways, counterbores machined to drawing |
Tolerances | Length ±0.05 mm; thickness ±0.02 mm; straightness ±0.05 mm/m |
Certification | ISO 9001:2015 |
Contact your trusted industrial flat knives manufacturer India: tell us your machine name/model, the material you cut, and the blade dimensions (or send a sample/drawing). We will recommend the right blade and quote within 24 hours.
WhatsApp: +91 93241 37971 | Email: info@finetechengineer.com | Contact Us
Up to 4,500 mm in one piece – your trusted straight blades manufacturer India. No welded joints, no spliced sections. A single continuous ground edge for the cleanest possible cut over the full blade length.
CNC ground on all edges. Every edge that matters – cutting edge, back edge, and both ends – is CNC ground to tolerance. This ensures flat, straight, parallel surfaces.
Material expertise. 20+ years of metallurgy experience. We select D2, HSS, stainless, or carbide based on your application – not just the easiest to source.
Standard sizes stocked. Common sheeter, cross-cut, and trim blade sizes available from stock for immediate dispatch.
Manufacturer, not trader – your trusted machine knives manufacturer India at Thane facility direct. Ground and heat-treated at our Thane facility. Direct factory pricing and support.
Product | Why Related |
For rotary slitting and cutting applications | |
Heavy-duty paper guillotine straight blades | |
Toothed straight blades for food and foam applications | |
Full range of blades for packaging machines | |
Specialised blades for paper cutting applications | |
Full range by geometry |
Customisation available
4,500 mm in a single piece. For blades over 2,000 mm, we use CNC surface grinding to ensure straightness within ±0.05 mm per metre.
As your trusted sheeter knives manufacturer India, Finetech recommends D2 tool steel (HRC 58–62) as the standard for paper sheeting. For coated or recycled paper, upgrade to HSS (M2) or tungsten-carbide-inlaid blades for 3–5× longer edge life.
Yes. We manufacture in SS 420 and SS 440C stainless steel, which are corrosion-resistant and food-safe. Suitable for meat, bakery, vegetable, and dairy processing applications.
Send us: (1) the blade dimensions (length, width, thickness), (2) the mounting hole pattern, (3) the material you cut, and (4) the machine name if possible. Alternatively, send us a worn blade as a sample.
Yes. Whether you need granulator blades manufacturer India replacements or metalworking shear straight blades manufacturer India re-sharpening – send worn blades to our Thane facility. We re-grind to original spec and return. Turnaround: 3–7 working days.
Answering “what is single bevel vs double bevel blade”: single bevel is ground on one side only (like a chisel) – produces a cleaner cut on one surface, used for trimming. Double bevel is ground on both sides (symmetrical V) – used for cross-cutting and chopping where both sides of the cut matter equally.
