Hard Rock Roller Cutters
High-Efficiency Rock-Breaking Core for Extreme Hard Rock Raise Boring
- Equipment: raise boring machine reamer head
- Size Range: 7″–19″
- Configurations: 5-row / 6-row / 7-row
- Applicable Formations: Medium-soft rock, hard rock, extremely hard rock, highly abrasive formations, alternating soft and hard strata
Product Positioning
Looking hard rock roller cutters are specifically designed for raise boring machines, shaft drilling rigs, and TBM reaming applications, serving underground engineering projects in mining, hydropower, transportation, and municipal engineering. The product features a high-strength alloy forged steel cutter body, high-purity tungsten carbide teeth, ceramic roller bearings, and a dual-channel sealing system, achieving faster drilling, longer service life, and lower cost per meter under extremely hard rock, highly abrasive, and high-thrust conditions.
| Item | Specification |
|---|---|
| Product Name | Looking Raise Boring Hard Rock Roller Cutter |
| Size Range | 7"–19" |
| Rows | 5-row / 6-row / 7-row |
| Tooth Types | Wedge-shaped, spherical, hybrid |
| Cutter Shell Material | High-strength alloy steel forging |
| Tooth Material | High-purity tungsten carbide / hard alloy |
| Bearing | Premium tapered roller bearing / ceramic roller bearing |
| Sealing | IP68, dual-channel high-pressure grease seal + labyrinth dust-proof |
| Gear Ring Hardness | HRC 58–62 |
| Dynamic Balance | G2.5 |
| Compressive Strength | ≥2500 MPa |
| Applicable Rock | UCS 80–180 MPa; extremely hard rock ≥250 MPa |
| Installation | TBM, raise boring machine reamer head |
| Replacement | Modular quick-change |
5-Row Cutter
Wide tooth spacing, high normal force, deep penetration, volumetric crushing, fast cutting speed,suitable for medium-hard and hard rock.
6-Row Cutter
Even-numbered, equidistant, symmetrical tooth arrangement, uniform force distribution, smooth torque feedback, one-sided wear reduced by more than 40%,suitable for rock formations with alternating soft and hard layers and multiple fractures
7-Row Cutter
Ultra-high-density tooth arrangement, steel body surface almost fully covered, erosion resistance, prevents secondary grinding,suitable for areas subject to severe wear and high corrosion
Custmer first, contact us now !
Thank you very much for your trust. Looking is committed to providing you with high-quality service.
“For rock of standard medium hardness (e.g., 120–150 MPa), what is the estimated life of a single bit (in meters drilled)?”
Can bearings, seals, and carbide teeth be replaced individually? Do you offer refurbishment kits (Redress Kits)?
“If we encounter abnormal wear or tooth loss on the hobbing cutter during hole enlargement, what are your on-site technical support and claims policies?”
Send Your Inquiry Today
ABOUT YOUR BRAND
If you are looking for raise boring machine or parts for your project,LK is your first choice.Send us your detailed requirement and get an instant quota now.
PRODUCTS
ABOUT us
CONTACT
Contact Us For Any Question!
Phone: +86-17608455805
Whatsapp: +86-17608455805
Email: lk-sales02@lkmining.com
Address: Building 1001001,LangLi District, Changsha City,Hunan,CN
Copyright © 2025 | All Rights Reserved.