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4330V MOD Atlascopoc Roller Cutter for Tunnel Boring Machine with Tungsten Carbide Size from 7" to 19"

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Raise Boring Rig H13 Forged Steel Carbide Roller Cutter

Name: Raise Boring Rig H13 Forged Steel Carbide Roller Cutter
Brand: ETERNAL
Rating: 5.0 (6 reviews)

1. ETERNAL customized roller cutters are widely applicated on all kinds of underground constructions.

2. The surface of the rolling cutters is embedded with tungsten carbide.

3. Different strengthes and impact properties could be adjusted inside tungsten carbide material according to different rock conditions.

4. ETERNAL has passed through ISO9001:2015, ISO45001:2018, ISO14001:2015 quality system certifications,BV marine WPS certification, CE certification,etc.

5. ETERNAL owns rich raise boring tools manufacturing and exporting experience.

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Model:
RBM-Roller Cutter,7" to 19",Customized
Brand:
ETERNAL

Product Description

Technical Parameters

Parameter	Specification
Brand	ETERNAL
Material	High strength forged steel H13
Size range	7''-19''
Division	3-Row cutter,4-Row cutter,5-Row cutter
Surface Treatment	Tungsten Carbide Hardfacing
Transmission Method	Rolling pin or Tapered roller bearing
Application	Tunnel Boring Machine and Raise Boring Machine
Function	Medium-hard to hard rock breaking
Production Process	Forging → heat treatment → lathe machining

Advantage of forged steel H13

H13 forged steel is currently the standard material for roller cutters of raise boring machines . Its core advantage lies in its excellent adaptability to the harsh working conditions of rock breaking in raise boring, including continuous impact, frictional heat generation, alternating loads and severe abrasion, delivering a well-balanced performance in hardness, toughness, hot hardness and crack resistance.

H13 Chemical Composition

C	Si	Mn	Cr	Mo	V	P/S
0.32-0.45%	0.8-1.2%	0.2-0.5%	4.75-5.5%	1.1-1.75%	0.8-1.2%	≤0.03%

H13 Mechanical Property(Q+T)

Tensile strength : 1200-1500 MPa
Yield strength : 1000-1300MPa
Elongation: 10-15%
Reduction of area: 45-55%
Impact value(room temperature) : 25-40J
Hardness: HRC 48-54

How to Choose Roller Cutter?

Soft Rock (Compressive strength＜60 MPa, including mudstone, shale and weathered sandstone)

Recommended cutter body: 42CrMo (optimal cost performance)

Matching cutter inserts: YG8

Recommended tooth type: Wedge tooth

Application scenarios: Shallow shafts, regular roadways, intact strata without massive broken rock

Medium-hard Rock (Compressive strength: 60 ~ 120 MPa, including common sandstone, limestone and sandy shale)

Scheme A (General & Economical Type)

Cutter body: 42CrMo; Cutter inserts: YG10; Tooth type: Conical tooth

Scheme B (Durable Type)

Cutter body: H13; Cutter inserts: YG10; Tooth type: Conical tooth

Application: Working conditions with large drilling footage and continuous operation

Hard Rock (Compressive strength: 120 ~ 180 MPa, including dense limestone, granite and basalt)

Recommended cutter body: 4330V

Matching cutter inserts: YG11C

Recommended tooth type: Spherical tooth

Application: Medium and deep shafts, high-hardness rock strata with slight fractures

Extra-hard Rock / Complex Broken Strata (Compressive strength ＞ 180 MPa, faults, fractured zones and pebble beds)

Preferred cutter body: 4330V (best performance in crack resistance and fatigue resistance)

Alternative cutter body: H13 (good wear resistance; use with caution under severe impact)

Matching cutter inserts: YG11C (high-impact cemented carbide)

Recommended tooth type: Large circular arc spherical tooth

Transmission Method

For raise boring cutters, cylindrical roller bearings are designed for heavy pure radial loads, medium-low speeds and medium-hard rock. Tapered roller bearings are intended for combined heavy radial and axial loads, hard rock, heavy impact conditions, as well as large-diameter and deep boreholes.

Application of Cylindrical Roller Bearings

Rock types: F6–F12 (60–120 MPa), sandstone, limestone, common granite, interbedded soft and hard rock.

Borehole types: Small and medium diameters (≤2 m), moderate depths (≤500 m), including mine ore passes, hydropower surge shafts and ventilation shafts.

Working conditions: Dominated by radial loads with minor axial force, medium impact, medium-low speed; cost performance is prioritized.

Application of Tapered Roller Bearings

Rock types: F12–F18 (120–250 MPa), high-strength granite, basalt, diorite, fractured zones under heavy impact.

Borehole types: Large diameters (≥1.5 m), deep boreholes (≥500 m), including deep mines, large hydropower stations and pumped storage inclined shafts.

Working conditions: Combined heavy radial and axial loads, heavy impact, highly abrasive hard rock; service life and reliability are top priorities.

Production Equipment

Quality Inspection

Certificate

certificates

FAQ

1.What is a raise boring drilling rig machine?

A raise boring machine is a large-scale equipment used in mining, water conservancy, hydropower and other projects, mainly for excavating vertical shafts, inclined shafts and ventilation shafts.

Its working principle is as follows: first drill a small-diameter pilot hole, then replace it with a large-diameter roller bit, and ream the shaft to the designed size from bottom to top (or top to bottom).

Construction Advantages

Compared with the traditional manual blasting method, it features high safety (workers do not need to enter hazardous working faces), high efficiency and excellent shaft-forming quality.

Core Components

It consists of the main unit, drill rods, power head(including roller cutter, reamer head, reamer stem bar, stabilizer), hydraulic system and other parts.