Inovatec Drag Finishing Machine suitable for the medical implant, tools, punches die as well as other high valued components smoothing and polishing. We engineered flexibly designed clamps for your parts surface improvement.
Inovatec Machinery · Vibratory Finishing
Inovatec’s drag finishing machines give smooth surface finishes, fast deburring, and reliable results for every batch. Below is real performance data and before-and-after comparisons from our industrial customers.
Before AfterProcess Specs
Parts Material | Processing time (min) | Media Type | Media Wear Rate | Ra before | Ra after | Material Removal | Consistency | |
Brass | 60 minutes | Walnut shell 24# | 0.3% per hour | 0.8 | 0.15 | < 0.3% | ±1% Surface Uniformity |
Uniform Finishing, Batch After Batch: A drag finishing machine keeps the cutting and polishing action consistent, so you get the same surface quality across repeated production runs.
Better Part Protection: Because parts are processed on holders (not freely mixed), the drag finishing machine greatly reduces part-on-part contact—ideal for delicate, high-value, or precision components.
Repeatable Process Control: Set speed, rotation pattern, and cycle time once, and the drag finishing machine can reproduce the same result with tight consistency (often within ±1% under fixed conditions).
Proven in Real Applications: Tested in 1,000+ finishing trials on various metals, geometries, and surface targets—from edge radiusing to high-gloss polishing.
QC-Friendly Traceability: The drag finishing machine can document cycle time, media selection, and key process settings, making quality checks and repeat orders easier to standardize.
Detailed specifications for our DF drag finishing machine. Compare models and download comprehensive technical documentation.
| Key Features: | Technical details |
| Grinding barrel size: | 85-100L |
| Maximumprocess parts: | 24 pcs |
| Main motor: | 2.2KW |
| Rotation disc: | 0-160rpm |
| Surface size: | 1020*860*1840mm |
| Machine weight: | 450KG |
The drag finishing machine holds each part in a dedicated fixture and drags it through a stationary media bed — the fundamental design difference from all batch finishing machines where parts tumble freely. This one structural decision determines everything about the process outcome: no part-to-part contact, controllable relative velocity between part and media, and consistent finishing geometry across every cycle.
Each workpiece is clamped in a dedicated spindle fixture before the cycle starts. The spindles orbit and rotate through the media bed while parts remain fixed in their holders. Parts never contact each other during processing. This is the defining advantage of drag finishing over all batch processes: high-value parts with polished reference surfaces, sharp cutting edges, or fragile features can be finished without the collision damage risk that exists in vibratory and barrel machines. Up to 24 parts can be processed simultaneously in a single DF100 cycle.
The DF100 generates finishing action through two independent motions: the spindle rotates the part on its own axis (0–160 rpm), while the arm orbits the spindle through the media. The combination of rotation and orbital path — including the figure-8 pattern — creates differential velocity between the part surface and media that can be tuned for each application. Aggressive deburring uses higher orbit speed with coarser media; final polishing uses lower speed with fine ceramic or porcelain. Both speed and path are programmable via the Siemens touch screen and saved as named recipes for repeat production.
The standard DF100 has vertical spindles. An optional 15-degree tilt on the spindle shaft changes the angle at which the part enters and moves through the media, directing more media contact into recesses, slots and undercut features that vertical spindles do not effectively reach. The tilt option is specified at order stage and is relevant for parts with deep pockets, re-entrant geometries or asymmetric features where uniform media access on all surfaces is required.
The drag finishing machine is in a different category from vibratory, barrel and centrifugal batch finishing machines. In batch machines, parts tumble freely with media — part-to-part collisions are inherent to the process. In drag finishing, each part is clamped in a fixture and dragged through a stationary media bed. Parts never contact each other. This makes drag finishing the standard choice for high-value components where any collision damage is not acceptable: cutting tools, medical implants, aerospace blade edges, watch cases, molds and dies, and precision 3D-shaped parts.
Watch our Surface finishing process in action. Learn more about our Surface finishing process technology.
Our mass finishing machine and tumbling media serve diverse industries with specialized finishing solutions for various materials and part types.
Engine components, transmission parts, brake systems
Turbine blades, landing gear, structural components
Fasteners, connectors, precision tools
Post-processing, surface refinement, finishing
Inovatec Machinery stands out as a trusted partner in surface finishing solutions, offering unmatched quality, innovation, and customer support.
Since 2003, we've been at the forefront of surface finishing technology, continuously innovating and improving our solutions based on real-world manufacturing needs.
We understand that every application is unique. Our engineering team works closely with you to design and configure machines that perfectly match your requirements.
With partners and service centers worldwide, we provide localized support and rapid response times regardless of your location.
We value your time. Our technical team responds to inquiries within 24 hours, ensuring you get the answers and support you need quickly.
Benefit from our expertise at no cost. We offer complimentary technical consultations to help you optimize your finishing processes and select the right equipment.
Over 500 satisfied customers across 50+ countries trust Inovatec for their surface finishing needs, with a 99% customer satisfaction rate.
Explore real applications by industry and scenario, with Before/After, sub‑categories and resources to help you quickly find what you need.
Jewelry | Precious Metals | Jewelry Polishing
Precision polishing, deburring and mirror finishing for gold, silver, copper and titanium jewelry—balancing premium surface quality with throughput.
Burrs on edges, surface scratches and oxidation spots reduce luster and wearing comfort.
Noticeably improved mirror gloss with rounded edges and better wearing comfort.
Additive Manufacturing | SLA/SLS/FDM
Removes layer lines, densifies surfaces and unifies appearance for 3D‑printed parts across materials and processes.
Pronounced layer lines, support marks and rough surface affect assembly and appearance.
Smooth, refined surface ready for painting/electroplating; presentation‑grade look.
Sheet Metal | Laser Cutting | Edge Optimization
Removes dross/burrs and adds edge radiusing on laser‑cut parts to improve safety and assembly quality.
Sharp, burred edges can cause cuts and hinder coating adhesion.
Consistent rounded edges and clean surfaces for better paint/e‑coat adhesion.
Consumer Electronics | Small Appliances | Exterior Parts
Delivers consistent texture and feel for high‑volume consumer products, improving brand perception and yields.
Uneven brushing, micro‑burrs and harsh feel affect assembly and user experience.
Uniform texture, smooth edges and refined touch; markedly better consistency.
Stone | Gemstone | Tumbling
Rounds edges and enhances gloss on natural/synthetic stones for jewelry and decorative crafts.
Sharp edges, rough surfaces and uneven color/reflection.
Rounded edges and even polish; improved visual appeal.
Automotive | Engine/Drivetrain | High‑volume Consistency
Deburring, edge radiusing and surface consistency for automotive parts to meet stringent standards.
Tool marks and residual burrs with sharp edges reduce fatigue strength and hinder assembly.
Stable edge radii and compliant roughness with high repeatability.
Defense | High Reliability | Process Consistency
High‑reliability, consistent surface finishing across metals and composites.
Sharp edges, stress concentrations and surface defects impact durability and safety.
Consistent chamfers and stable surface quality; coating/assembly‑ready.
Aluminum Profiles | Die‑cast Parts | High‑volume Finishing
Efficient, consistent finishing for aluminum parts; ideal for pre‑anodizing treatment and brushed/polished appearance.
Gate/flash marks and dull surfaces; notable batch variation.
Flash removed with refined texture and higher brightness; improved batch consistency.
Engineering Plastics | Injection‑molded Parts | Deflashing
Removes plastic flash and smooths edges to prevent scratching and improve assembly.
Visible flash and sharp edges affect feel and assembly.
Flash removed and corners smoothed; improved look and feel.
Enhance your mass finishing machine and tumbling media with our professional-grade accessories. Increase efficiency, reduce noise, and optimize your finishing process.
The 15-degree tilted shaft option changes the angle at which the part spindle enters the media bed, directing finishing action into deep slots, pockets and re-entrant geometries that vertical spindles cannot effectively reach. Specified at order stage. Suitable for parts with complex internal features requiring uniform surface coverage across all faces.
The Siemens PLC touch screen controller allows full process programming — spindle speed, orbit speed, cycle time, rotation direction and multi-step sequences can be configured and saved as named recipes per part type. Operators select a saved program and load fixtures; no manual parameter entry is needed for repeat production runs.
Get the most out of your mass finishing machine and tumbling media with our comprehensive accessory package. Our experts will help you select the right combination of accessories for your specific application needs.
Accessories designed to maximize machine efficiency and output quality
Reduce operational costs through improved efficiency and reduced waste
All accessories designed for seamless integration with your existing machine
Inovatec Machinery is committed to the highest standards of quality, safety, and reliability.
Quality Management System certified by international standards, ensuring consistent product quality.
European Conformity marking ensuring our machines meet EU safety standards.
Comprehensive testing and inspection reports from SGS.
Environmental protection standards compliance.
Since 2003, Inovatec Machinery has been at the forefront of surface finishing technology innovation.
Our machines are trusted by manufacturers worldwide and recognized at major industry exhibitions.
Regular participation in major industry exhibitions worldwide.
Strategic partnerships across major manufacturing regions.
Find answers to common questions about our products.
A drag finishing machine is a precision surface finishing system where parts are clamped on rotary holders and dragged through a container filled with abrasive media. The workpieces rotate and orbit in the media, creating strong, controlled friction on the surface. This process removes burrs, smooths edges, and polishes surfaces without part-to-part contact, which is ideal for valuable or delicate components.
Yes. Drag finishing machines are designed for easy operation and integration. Recipes can be saved for different parts, so operators only need to select the program and load the fixtures. The process is clean, repeatable, and suitable for both small series and larger batches of high-value parts. This makes drag finishing an excellent choice for manufacturers who want to upgrade from manual polishing to an automated, controlled finishing solution.
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399# Shushan Road, Wuxing District, Huzhou City, Zhejiang Province, 313000 China
6317 Arcadia St, Eastvale, CA 92880 USA (323-577-3309)
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