Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of sharpening discs in China. If you're going to wholesale bulk cost-effective sharpening discs made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Sharpening discs for Molins MK9 and MK9-5 cigarette makers are consumable parts that maintain the cut‑off knife edge during continuous production.This product (Part No. 31667-650) is dimensioned specifically for MK9/MK9-5: OD 100 mm, ID 13.3 mm. It is not interchangeable with discs for other machine models without confirming specifications.
Basic Information
| Item | Detail |
|---|---|
| Part No. | 31667-650 |
| Other Names | Grinding disc / cut-off knife sharpening wheel / tobacco machine sharpening disc |
| Apply To | Molins Mark 9 (MK9) / Mark 9-5 (MK9-5) cigarette making machine |
| Outer Diameter | 100 mm |
| Inner Diameter (Bore) | 13.3 mm |
| Material | Alloy tool steel |
| Surface Treatment | Ground and finished to flatness tolerance |
| Installation Quantity | Supplied and used in pairs (2 pcs per set) |
| Weight | 0.3 kg per disc |
| Condition | New |
| MOQ | Contact factory |
| Place of Origin | Dongguan, Guangdong, China |
| Customization | Surface finish, hardness spec, and custom dimensions available on request |
How Sharpening Discs Work in MK9 Cigarette Machines
In Molins MK9/MK9‑5 machines, the cut‑off knife severs the cigarette rod at high speed (thousands of cuts per minute). To maintain cut quality, the knife edge must be continuously resharpened during operation. Two sharpening discs are positioned on each side of the knife path. As the knife rotates past them, the discs make controlled contact with both knife faces, removing minimal material per pass to restore the edge - automatically, without operator intervention.
Because the discs contact a high‑speed rotating knife continuously, their surface condition is critical. Poor flatness or uneven hardness causes asymmetric sharpening, reducing cut quality and accelerating knife wear. Thus, the disc's dimensional accuracy and surface finish directly affect production performance.
Compatible Machine Models
Part No. 31667-650 is specified for the following machines:
| Machine Maker | Model | Function in Machine |
|---|---|---|
| Molins | Mark 9 (MK9) | Cut-off knife sharpening unit |
| Molins | Mark 9-5 (MK9-5) |
Cut-off knife sharpening unit |
For Molins Mark 8 (MK8) machines, a different sharpening disc dimension is required - the MK8 uses a 70 mm or 80 mm outer diameter variant depending on configuration. Please confirm your machine model when placing an inquiry if you are unsure which part number applies to your installation.
Hansheng also manufactures and supplies sharpening discs and grinding components for other cigarette maker platforms, including Hauni Protos series, GD machines, and KDF filter makers. If your requirement covers multiple machine types, contact our team to consolidate your spare parts sourcing.
Installation and Replacement Guidelines
Replacement interval
No fixed schedule. Replace when cut quality degrades and cannot be fixed by knife tension/position adjustment.
Pair replacement
Always replace both discs as a matched pair. Never mix new with worn.
Mounting & alignment
Clean arbor bore and seating face. Installation‑induced runout is common – check with dial indicator after mounting.
Surface inspection
Before installing, visually inspect disc face for flatness defects, pits, edge chips. Do not use any disc with surface irregularities.
FAQ
Q: Are sharpening discs supplied individually or in sets?
A: These discs are used in pairs in the MK9/MK9-5 sharpening unit. We can supply them individually for stock purposes, but we recommend ordering in pairs to ensure both discs are replaced simultaneously when a set reaches end of service life.
Q: What is the difference between the MK9 and MK9-5 sharpening disc? Can the same part be used on both machines?
A: Part No. 31667-650 (OD100mm × ID13.3mm) covers both the Mark 9 and Mark 9-5 platforms - the sharpening unit dimension is shared across these two models. If you are running Mark 8 machines alongside MK9 machines, a different disc dimension is required for the MK8; please specify your machine models when ordering to avoid confusion.
Q: Can the disc surface finish or hardness be customized for specific operating conditions?
A: Yes. Some operations run at non-standard production speeds, or use cut-off knife materials with different hardness characteristics that require a matched adjustment in disc specification. We can discuss surface finish and hardness customization based on your specific machine configuration and operating conditions.
Q: What is the lead time for standard orders?
A: For custom specifications or large volume orders, please allow 15–30 business days. Contact us with your required quantity for a firm delivery commitment.
Q: Do you supply other spare parts for Molins MK9 and MK9-5 machines?
A: Yes. Our cigarette machine spare parts range covers multiple components for the Molins MK8, MK9, and MK9-5 platforms, including collector tubes, cutting knives, and garniture tapes, as well as parts for Hauni, GD, KDF, and Focke equipment. Procurement teams with multi-machine spare parts requirements are welcome to consolidate orders through a single contact.
Hot Tags: Sharpening Discs, China Sharpening Discs manufacturers, suppliers, factory
