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12 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg Rock Drill
| MOQ: | 10 Pieces |
| Price: | USD 5-15 / Piece |
| Standard Packaging: | Standard export wooden case or carton with foam protection |
| Delivery Period: | 7-15 working days after order confirmation |
| Payment Method: | T/T,L/C,Western Union |
| Supply Capacity: | 50000 Pieces per Month |
12 Degree Tapered Button Bit
,Hard Rock Deep Hole Bit
,H22 Granite Mining Drill Bit
Product Overview
The 12-degree tapered button bit is a heavy-duty rock drilling tool built for hard rock and deep-hole drilling. Its steep taper profile delivers the strongest self-locking grip on the drill rod, preventing bit drop under high-impact, deep-hole conditions where 7-degree and 11-degree bits may loosen. It pairs with H22 hexagonal tapered drill rods on YT23, YT24 and YT28 air leg rock drills, in a full diameter range of 26-42mm.
Key Features & Advantages
- Strongest self-locking: the steep 12-degree taper grips firmly, preventing bit drop in deep holes and hard formations.
- High-impact resistance: withstands sustained heavy impact in hard granite and high-impact drilling.
- Less taper wear under load: stable fit reduces socket and rod wear during heavy-duty operation.
- Better hole straightness: firm grip keeps the bit on track in hard, fractured rock for straighter holes.
- Universal compatibility: fits standard YT23/YT24/YT28 air leg rock drills with H22 taper rods, covering 26-42mm sizes.
Applications
- Hard granite and hard rock drilling
- Deep-hole mining and tunneling
- High-impact quarrying and construction drilling
- Deep anchor and slope support drilling
Technical Specifications
| Taper Degree | 12° |
| Diameter Range | 26-42mm |
| Rod Type | H22 hexagonal tapered drill rod |
| Compatible Drills | YT23 / YT24 / YT28 air leg rock drill |
| Recommended Depth | Over 2.5m (deep hole) |
| Rock Formation | Hard granite, hard rock |
| Bit Type | Carbide button bit |
Operating Notes
- Match only with 12-degree taper drill steel; clean the taper contact surfaces before assembly.
- Removal requires a firm hammer tap; the steep taper grips more tightly than 7-degree or 11-degree bits.
- Not recommended for soft rock shallow holes, where a 7-degree taper changes bits faster.
- Inspect taper fit regularly under sustained heavy impact.
FAQ
When should I choose a 12-degree taper bit? For hard granite, deep holes over 2.5m and high-impact drilling where maximum self-locking is needed to prevent bit drop.
Which drill rods does it fit? H22 hexagonal tapered rods with a matching 12-degree taper.
What is the minimum order quantity? Please contact us with your required diameter and quantity; we support small trial orders and bulk supply.
