Product Specifications
Specification | Details |
Diameter | 230mm / 9" |
Arbor Size | 22.2mm / 7/8" |
Segment Height | 7mm / 9/32" |
Segment Height | 2.4mm / 3/32" |
Max. Safe Speed | 6,500 RPM |
Cutting Method | Wet Cutting |
Adapter Rings | 20mm / 5/8"+16mm / 3/4" |
Suitable Materials
Compatible Machines
Application
Safety Instructions
Eye protection
Please wear safety glasses
Hand Protection
Please wear protective gloves
Proper Disposal
Dispose of damaged or worn blades safely
Respiratory Protection
Please wear face respiratory mask
Frequently Asked Questions
Follow these operation and maintenance practices to maximise performance, longevity, and safety:
Longevity tips:
- Maintain stable water flow: Insufficient flow is the primary cause of premature wear – ensure the recommended flow rate.
- Avoid overloading: The continuous rim has higher resistance – never force the blade; let the machine cut at its own pace to prevent diamond segment loss from overheating.
- "Break in" new blades: Before first use, make 3–5 shallow cuts on a soft abrasive material (e.g., old cinder block or sandstone) to expose the diamond grit and improve initial sharpness.
- Clean regularly: Rinse the blade with water after each use to remove concrete slurry, preventing dried deposits that affect balance and accuracy.
- Check mounting: Ensure the arrow direction matches the spindle rotation and use the correct reduction ring (9" blades typically have a 22.23mm bore, with optional 25.4mm or 20mm rings included).
Safety precautions (critical):
- Never cut rebar‑embedded concrete or metal – this will directly ruin the diamond rim.
- Check max RPM: Confirm the machine's no‑load speed does not exceed the maximum RPM marked on the blade (often 6600 RPM or 5800 RPM for 9" blades – verify carefully). Over‑speeding is extremely hazardous.
- Always use the guard: A 9" blade has high inertia – never remove the machine guard.
- Wear full PPE: Including safety goggles, ear protection, dust mask (even with wet cutting, there is slurry splash), cut‑resistant gloves, and steel‑toe boots.
- Inspect before each use: Check for cracks, warping, or segment damage – replace immediately if any is found.
Yes, this blade is designed for wet cutting only – dry cutting is strictly forbidden.
Because the continuous rim has no gullets for debris evacuation, the generated dust and heat cannot be expelled quickly. Without water cooling, dry cutting will cause the blade to overheat severely within seconds, leading to diamond layer loss, core warping, or even cracking – irreversible damage.
Special requirements for 9" large‑size wet cutting:
- Sufficient water flow: A flow rate of at least 3–4 L/min is recommended, ensuring continuous coverage of the cut slot to remove heat and slurry.
- Match with high‑power equipment: A ≥ 2200W cut‑off saw is recommended to maintain stable RPM (typically up to 6600 RPM or lower, as marked on the blade). Insufficient power reduces speed and increases friction.
- Correct water supply: Ideally use a professional cutter with an integrated water system, or direct the water hose onto the cut entry point for full penetration.
- Steady feed rate: Let the blade's weight and machine power do the work – do not force it, especially during deep cuts.
- Rinse after cutting: Continue spraying water for a few seconds after cutting to remove residual slurry and prevent imbalance from dried deposits.
This 9‑inch (230mm) continuous‑rim diamond blade is engineered for high‑precision, chipping‑free cutting of smooth concrete, trowelled concrete, precast concrete panels, fine stone, and large‑format tiles. It delivers exceptionally smooth, straight, and clean cut lines, making it ideal for municipal expansion joints, airport runway grooving, bridge expansion slots, decorative concrete work, and large precast component finishing.
Compared to a same‑size segmented blade (with gullets for fast rough cutting), the continuous rim features an uninterrupted diamond ring with no gaps. This design ensures minimal vibration and noise, effectively prevents edge chipping, and results in a ground‑like polished finish. The trade‑off is a slower cutting speed, and it is strictly unsuitable for rebar‑embedded concrete or metal, which would rapidly destroy the diamond layer.
Advantage of the 9" large size: Compared to 4½" and 7" blades, the 9" offers a single‑pass cutting depth of approximately 70–80mm, greatly improving efficiency in deep‑cut applications. It is designed to fit 9" (230mm) high‑power angle grinders or cut‑off saws, balancing precision with high productivity.