Meat Grinder

Stainless Steel Meat Grinder Parts Manufacturer & OEM Cast Components

We manufacture stainless steel meat grinder components, including grinder housings, feed augers, grinding plates, cutting knives, and retaining rings. Combining silica sol investment casting with CNC machining and finishing processes, we produce custom components to customer drawings, specified material grades, dimensional tolerances, and surface-finish requirements.
Our manufacturing options cover raw investment castings and fully machined components for commercial meat grinder equipment. Material selection, hardness, surface finish, and inspection requirements can be specified according to the intended application and customer requirements.

Meat Grinder Plate
Our casting process is way smarter. We use precision molds that form all the cutting holes and the center hub in one single shot. The only time we touch our CNC machines is at the very end to...
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Meat Mince Screw Cover
Our casting process molds the whole complex ring shape and ridges in one single shot. We only use our CNC machines at the very end to cut the precise internal threads and face the sealing edge....
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Meat Grinder Screw
A grinder auger has to take absolute abuse. It’s crushing raw meat, fat, and bone against the front plate all day. If your current supplier uses cheap sand casting, you’re going to have massive...
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Meat Grinder Casing
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality stainless steel meat grinder casings using advanced silica sol investment casting technology. Our...
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Meat Grinder Cylinder
We actually melt the metal here. We are an ISO 9001 and IATF 16949 foundry. When you send us an email, you talk to the guys running the furnaces and the CNC machines, not a middleman salesman who...
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Kitchen Aid Meat Grinder Attachment
Our production line focuses heavily on premium, high-finish castings under 5 kg, utilizing the exact same silica sol medium-temperature wax process used in aerospace manufacturing. For kitchen...
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Product Range

Grinder Component	Manufacturing Process	Material Options	Key Technical Feature
Grinder Housings / Tubes	Silica Sol Investment Casting + CNC Boring	SUS304 (1.4301) / SUS316 (1.4401)	Internal spiral geometry; specified surface finish, with Ra values down to 0.8 μm where achievable
Feed Augers / Screws	Investment Casting + CNC Machining; balancing where specified	SUS304 / CF8 / CF8M, subject to material specification	Variable-pitch geometry; concentricity tolerance of ±0.02 mm for specified features, subject to drawing and inspection method
Cutting Plates	Forging or Investment Casting + Flat Grinding	420J2 (1.4028) / 440C / D2, subject to application requirements	Hole diameters from 2.0 mm to 20 mm; specified hardness and flatness requirements
Cross Knives / Blades	Investment Casting or Other Approved Process + Heat Treatment	420J2 / 440C (1.4125)	Cutting-edge geometry and heat-treatment requirements defined by the drawing and material specification
Retaining Rings / Caps	Investment Casting + CNC Threading	SUS304 / CF8	Custom ACME, metric, or other specified thread forms

Materials and Specifications

Category	Parameter	Specification / Details
Material Selection	Austenitic Stainless Steel	SUS304 / SUS316 for grinder housings and augers; corrosion resistance against meat acids, salts, and washdown chemicals
Material Selection	Martensitic Stainless Steel	420J2 / 440C for cutting plates and knives
Heat Treatment	Hardness	HRC 52–58 through vacuum heat treatment
Regulatory Compliance	US Standards	FDA 21 CFR 175.300; NSF/ANSI Standard 8
Regulatory Compliance	EU Standards	EU Regulation No. 1935/2004; heavy metal leaching test reports
Dimensional Tolerances	Raw Casting	ISO 8062-3, CT4–CT6
Dimensional Tolerances	CNC Machining	±0.01 mm for critical bearing seats and shaft interfaces
Dimensional Tolerances	Plate Surface Flatness	Within 0.005 mm

Manufacturing and Machining

Our foundry and machine shop utilize specialized production routes tailored for food machinery parts.

Silica Sol Shell Molding: Eliminates subsurface gas pockets, providing a dense metal grain structure that prevents bacterial harborages inside the grinder body.

Vacuum Heat Treatment: Martensitic blades undergo controlled atmosphere hardening and sub-zero cryogenic treatment to convert retained austenite into stable martensite, eliminating edge chipping.

Surface Polishing: Multi-stage mechanical mirror polishing and electropolishing achieve surface roughness values down to Ra 0.4 micron for stick-free meat transport and quick washdowns.

Quality Control and Inspection

Quality assurance protocols cover raw ingot chemical verification through to final dimensional and sanitary checks.

Spectrometer Chemical Analysis -> X-Ray / NDT Porosity Check -> Hardness Testing (HRC) -> Surface Roughness / CMM Verification

Chemical Verification: Optical Emission Spectrometry (OES) heat testing before pouring to ensure Nickel, Chromium, and Carbon percentages strictly meet material norms.

Hardness Control: 100% Rockwell hardness testing on every heat-treatment batch of blades and plates.

Defect Detection: Radiographic Inspection (RT) and Dye Penetrant Testing (PT) prevent subsurface porosity on high-stress auger shafts.

Precision Measurement: Coordinate Measuring Machines (CMM) and optical profile projectors verify thread pitch, hole concentricity, and face flatness.

OEM Customization Process

DFM Analysis

Engineering review of draft angles, wall thickness consistency, and machining allowances within 48 hours.

Tooling Fabrication

In-house CNC aluminum wax mold cutting to ensure high-dimensional repeatability.

Sample Validation

3 to 5 sample pieces delivered with material test certs (EN 10204 3.1), CMM dimension sheets, and hardness test reports.

Serial Production

Volume manufacturing starts after written sample sign-off and fit-up approval on customer power heads.

Production Capacity and Delivery

Foundry Output

120 metric tons of finished food-grade investment castings monthly.

Tooling and Sample Lead Time

15 to 20 calendar days for tooling creation and initial sample delivery.

Mass Production Lead Time

25 to 35 calendar days following formal sample sign-off.

Protective Packaging

Individual VCI anti-rust paper wrapping, food-grade PE bags, slotted corrugated partitions, and ISPM 15 heat-treated wooden cases for safe sea transport.

FAQ

Q: Why use silica sol investment casting instead of water glass casting for meat grinder parts?

A: Silica sol casting produces superior surface smoothness (Ra 3.2 microns raw vs Ra 12.5 microns) and tighter dimensional tolerances (CT4 to CT6). Crucially, silica sol eliminates pinholes and surface voids where food residue and bacteria can accumulate, making it mandatory for NSF and FDA compliance.

Q: What stainless steel grade do you recommend for cutting blades and plates?

A: We recommend 420J2 or 440C martensitic stainless steel for cutting blades and plates. These grades undergo heat treatment to achieve HRC 52 to 58 hardness, providing the edge retention needed to cut tough meat and sinew while maintaining resistance to washdown corrosion.

Q: Can you supply fully machined and polished parts ready for assembly?

A: Yes. We supply fully machined, heat-treated, and polished components. Parts arrive ready for direct assembly onto your commercial meat grinder units without requiring additional secondary machining or surface processing.

Q: How do you guarantee that material chemistry complies with food-grade standards?

A: We verify every melt with an Optical Emission Spectrometer before pouring. We supply EN 10204 3.1 material certificates with every shipment, detailing exact chemical composition and mechanical test metrics.

Q: What information do you need to provide a custom quotation?

A: Please provide 3D CAD models (STEP/IGES) along with 2D technical drawings (PDF/DWG) detailing material requirements, hardness targets, surface finish specifications, critical tolerances, and estimated annual procurement quantities.

Q: How do you protect precision ground cutting surfaces during shipping?

A: Ground cutting faces and sharp blade edges are coated with food-grade protective oil, capped with plastic protective covers, sealed in individual food-grade PE bags, and packed into custom-partitioned wooden crates to prevent impact damage during international transport.

WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO.,LTD. is one of the most professional meat grinder manufacturers and suppliers in China, also supports customized service. Welcome to buy bulk cheap meat grinder made in China here and get quotation from our factory. For price consultation, contact us.

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