Search
×
Litian Heavy Industry Machinery Co., Ltd
Litian Heavy Industry Machinery Co., Ltd
kerf bit
kerf cutter
kerf cutter
kerf drill bits
kerf bits
kerf bit
kerf cutter
kerf cutter
kerf drill bits
kerf bits

Kerf Type RBM Cutter

Kerf type RBM cutter is a type of TCI roller cutter widely used in raise boring equipment for rock excavation. Featuring multiple annular grooves (chipways) on the cutter surface and carbide inserts distributed around the grooves, this cutter is designed to improve rock breaking efficiency and maintain stable performance in demanding drilling conditions. As one of the most commonly used raise boring drilling tools, Kerf roller cutters are available in different configurations to meet various project requirements.


Features of Litian Kerf type RBM Cutter

1. Wear-Resistant Tungsten Carbide Inserts

The cutter adopts premium tungsten carbide inserts with different configurations, including chisel, conical, spherical and ballistic inserts. The optimized insert design improves rock penetration efficiency while reducing premature wear during continuous excavation.


2. Reliable Bearing and Sealing System

Equipped with high-quality bearing structures and metal seals, Litian Kerf Type RBM Cutter maintains stable rotation performance under heavy loads, abrasive environments and long-duration drilling operations.


3. Repairable and Customized Design

To reduce operational costs, Litian provides repairable cutter solutions and customization services based on equipment requirements, geological conditions and project specifications.


Application and Working Conditions of Kerf Type RBM Cutter

Kerf type RBM cutters are mainly used in raise boring equipment for rock excavation. Their performance depends on factors such as rock hardness, geological conditions, cutter configuration and operating parameters. Selecting the appropriate cutter design helps achieve stable cutting performance, improve drilling efficiency and extend service life under different working conditions.


With a TCI cutter structure, the Kerf type RBM cutters are designed for efficient rock breaking and chip removal during raise boring operations. The suitable cutter configuration may vary depending on the drilling environment and project requirements.


Kerf Type RBM Cutter Application Parameters

Selecting the correct operating parameters is essential for maximizing cutter life and excavation efficiency. The recommended values may vary depending on rock hardness, machine configuration and project conditions.

1. Applicable rock hardness: protodyakonov scale of hardness 11≤f≤20.

2. Recommended WOB of roller cutter: 100KN~200KN.

3. Maximum WOB (weight on bit): 245KN.

4. Recommended cutterhead rotation speed: 3-15 RPM.

5. Maximum linear velocity: 90m/min.


How to Choose the Right Kerf Type RBM Cutter

Consider Rock Hardness

Different geological conditions require different cutter configurations. Hard rocks such as granite and basalt usually require more wear-resistant insert designs.


Match Cutter Design with Raise Boring Equipment

Cutter diameter, taper design and bearing structure should match the specifications of the raise boring machine and cutterhead.


Select the Right Insert Type

Chisel, conical, spherical and ballistic inserts provide different rock-breaking characteristics for various formations.


Kerf Roller Cutter Models and Specifications

Litian provides multiple Kerf Roller Cutter models with different dimensions and configurations to meet various raise boring requirements.


NO.

Model

A

B

C

E

F

Rows

Taper

1

LT347520-00A

336

246

347

76

76

5

20°

1641895038(1).jpg


NO.

Model

A

B

C

E

F

Rows

Taper

2

LT347520-00B

336.2

246

346.7

76

76

5

20°


NO.

Model

A

B

C

D

E

F

Rows

Taper


3

LT340420-00

335

239.5

340

40

80

80

4

20°


4

LT340520-00B

335

239.5

340

40

82

82

5

20°



NO.

Model

A

B

C

D

E

F

Rows

Taper


5

LT320520-00

331

227

320

45

86

80

5

20°


6

LT320620-00

331

227

320

45

86

80

6

20°



FAQ

Frequently Asked Questions About Kerf Type RBM Cutters

Q: How does a raise boring cutter break rock?

A: A raise boring cutter breaks rock through the interaction between the cutter body, carbide inserts and rock formation. The cutter applies pressure to create fractures and remove rock chips during rotation, allowing efficient excavation in raise boring operations.


Read More: Rock Breaking Mechanism of Raise Boring Rig Cutters


Q: What is the difference between Kerf Type RBM Cutter and Random Type RBM Cutter?

A: Kerf Roller Cutter uses a kerf cutting structure designed for efficient rock penetration in harder formations, while Random Type RBM Cutter uses randomly distributed buttons for broader crushing coverage in different rock conditions.


Q: How can I extend the service life of a Kerf Type RBM Cutter ?

A: Proper operating parameters, regular inspection and timely maintenance can help extend cutter service life. Monitoring carbide wear, bearing conditions and overall cutter performance is important for maintaining stable drilling efficiency.


Q: Can Kerf Type RBM Cutter be customized for different drilling conditions?

A: Yes. Kerf Type RBM Cutter can be customized according to equipment requirements, geological conditions and specific project needs, including cutter dimensions, carbide configurations and structural designs.



Contact Us

To know More About Litian Rock Tools

Related Raise Boring Cutters

Litian Updates
Sep 30-2026
Over 400 Meters in the First Month! Litian Cutters Support “China Nonferrous No. 2” in Hard-Rock Excavation
September 12, local time — Good news has come from the Chambishi Copper Mine Project in Zambia.Africa’s first full-face hard-rock TBM designed for non-ferrous metal mining, “China Nonferrous No. 2,...
Aug 28-2026
Quarry Drilling Equipment: Complete Guide to Rock Drilling Tools
Quarry drilling is the foundation of every successful aggregate operation. The quality of the drilling program determines the accuracy, efficiency, and performance of every blast that follows. In a hi...
FOLLOW US
Taper Drill Rod vs Threaded Drill Rod: Which Should You Choose?
Fill out now for more information