Walnut Shell Tumbling Media
- Data Sheet
- Description
- Video

- Granules for suitable dry polishing and cleaning applications
- Jewelry, metal, and plastic parts evaluated by sample
- Particle size matched to holes, recesses, and separation
- Polishing paste or media treatment confirmed for the process
- Media condition and surface residue checked during production
Walnut Shell Media for Dry Polishing
Walnut shell tumbling media are plant-based granules used in suitable dry-polishing and cleaning processes. Polishing paste or a prepared media treatment can be part of the process. Select the granule, treatment, and equipment together to achieve the required surface condition.
Select the Granule and Polishing Treatment
The listed range extends from coarse grade 6# (3.15–4 mm) to fine grade 30# (0.50–0.71 mm). Confirm the selected particle-size range and current availability. Specify whether the quoted granules are untreated or supplied with a polishing treatment, and whether additional compound is needed. Check small openings and recesses for media lodging and carryover.
Check the Machine Configuration
Assess dry-compatible vibratory systems, centrifugal barrel machines, rotary tumblers, or centrifugal disc machines for the selected process. Confirm approved media, working load, settings, handling, and separation. A machine designed for wet finishing should not be assumed suitable for a dry process without checking its specification.
Evaluate the Actual Workpiece
Applications shown include jewelry, suitable metal or plastic parts, and brass components. Test representative samples for brightness, surface marking, dimensional change, residue, and lodged granules. Coated surfaces, fine details, and cosmetic plastic parts need their own acceptance criteria. Soft media do not guarantee that every substrate remains unchanged.
Monitor Media and Finish Consistency
Inspect granules for contamination, moisture, breakdown, and changes in the polishing treatment. Keep different processes separate where carryover would affect the finish. Record the approved load, cycle, replenishment, separation, and inspection method. Follow the machine and material handling instructions; natural origin alone does not establish a dust-free process or universal surface compatibility.
Discuss a Sample Evaluation
Send the workpiece material, dimensions, drawings or photographs, machine model, batch quantity, and required finish. An unfinished sample and a reference part can help define the target. Include roughness, appearance, cleanliness, dimensional limits, and downstream treatment where relevant. Confirm the sample scope, media specification, order quantity, packaging, lead time, and delivery arrangements with Inovatec.





