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Self Cutting Mechanical Anchor

Self-cutting mechanical anchor consisting of a threaded rod, thrust sleeve, flat washer, spring washer, and nut, this anchor features integrated carbide-tipped cutter blades at its leading end that automatically carve an inverted-cone interlock cavity into the concrete borehole wall during installation—eliminating the need for specialized undercutting tools. The core innovation lies in its synchronized mechanism: tightening the nut activates the thrust sleeve to simultaneously trigger cutting action and key deployment, creating immediate mechanical interlock between the expansion keys and concrete cavity.

Compared to undercut mechanical anchors, this technology reduces installation steps by 50% (≤1 minute per hole) while maintaining consistent tensile resistance (≥70kN@M16) in C25-C80 concrete. Usage is restricted in low-strength concrete (20mm. Typical applications include curtain wall rapid mounting and emergency equipment retrofitting where time efficiency is critical.

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Advantage

1. Single-step installation eliminates secondary undercutting, enabling rapid deployment.

2. Annular cutter geometry ensures consistent concrete engagement for reliable mechanical key interlock, enhancing structural integrity.

3. Immediate full design load capacity upon installation—zero curing delay (ISO 16130 compliant).

4. Expansion-stress-free design permits minimum edge distance anchoring (3D per ETAG 001), reducing material costs.

Application

1. Construction Engineering and Curtain Wall Installation

Self-cutting mechanical anchor bolts are widely used in the construction field, especially for high-rise curtain wall fixing (such as glass curtain wall, metal curtain wall), steel structure connection (steel beam, column support) and renovation project reinforcement (such as equipment base, bracket installation). Its non-expansion stress characteristics can avoid concrete cracking, and its fatigue resistance meets the seismic requirements. It is the core anchoring solution for civil buildings and industrial plants.

2. Energy and Heavy Industrial Facilities

In the energy industry, this anchor bolt is the key to the seismic anchoring of nuclear power plant equipment. It is used to fix nuclear power pipeline supports, heavy machinery bases of power plants, and support the installation of large equipment in hydropower stations. Its high strength and vibration resistance can withstand extreme loads.

3. Transportation Infrastructure

In transportation construction, self-cutting anchor bolts are used in tunnels and subways (anchoring cable trays, ventilation systems), bridges and railways (installing sound insulation panels, track equipment) and airport hubs. With its anti-dynamic load characteristics, it can stably bear train vibration and fatigue impact in cracked concrete environments, making it a reliable choice for subways, high-speed railways and tunnel projects.

4. Public Facilities and Municipal Engineering

The municipal field focuses on public safety systems: including fire protection/HVAC pipe hanging, fire door and anti-theft door fixing, road noise barrier installation, and public building renovation such as hotels and hospitals. Its corrosion-resistant material (A4 stainless steel/zinc-diffused layer) adapts to humid environments, and its easy installation significantly improves the efficiency of municipal engineering.

Self-Cutting Mechanical Anchor
Model	Drilling Diameter (mm)	Drilling Depth (mm)	Effective Anchoring Depth (mm)	Maximum Anchoring Thickness (mm)	Screw Length (mm)	Screw Model	Anchor Hole Diameter (Preset) (mm)	Anchor Hole Diameter (Penetrating) (mm)
TZQ 14*60 M10/25	14	65	60	25	100	M10	12	17
TZQ 14*40 M10/45	14	45	40	45	100	M10	12	17
TZQ 16*60 M10/25	16	65	60	25	100	M10	12	19
TZQ 18*80 M12/25	18	90	80	25	130	M12	14	19
TZQ 18*100 M12/25	18	110	100	25	150	M12	14	19
TZQ 18*80 M12/40	18	90	80	40	150	M12	14	19
TZQ 22*70 M16/20	22	80	70	20	130	M16	18	/
TZQ 22*100 M16/25	22	110	100	25	160	M16	18	24
TZQ 22*125 M16/25	22	135	125	25	190	M16	18	/
TZQ 22*100 M16/50	22	110	100	50	190	M16	18	24
Material	Carbon Steel: Grade 4.8/5.8/6.8/8.8/10.9/12.9 Stainless Steel: 201/304/316/410
Surface Treatment	Electro zinc plating(zinc layer thickness>5um), used in general environment; Hot-dip zinc plaing(zinc layer thickness > 45um), used in corrosive environments.

Technical Parameters
Items	Material	M10	M12	M16
Effective Anchoring Depth (mm)	/	60	80	100
Drilling Depth (mm)	/	65	85	105
Drilling Diameter (mm)	/	14	18	22
Design Load for Non-Cracked Concrete
Tensile Design (kN)	Grade 8.8	11.1	19.2	29.8
	316(A4-70)	11.1	19.2	29.8
Shear Design (kN)	Grade 8.8	15.5	22.5	41.8
	316(A4-70)	14.4	20.8	38.8
Design Load for Cracked Concrete
Tensile Design (kN)	Grade 8.8	7.9	13.7	21.3
	316(A4-70)	7.9	13.7	21.3
Shear Design (kN)	Grade 8.8	15.5	22.5	41.8
	316(A4-70)	14.4	20.8	38.8
Base Material Condition
Minimum Spacing (mm)	/	60	72	96
Minimum Margin (mm)	/	60	72	96
Minimum Substrate Thickness (mm)	/	120	160	200
Remarks: 1. The data in the table is applicable to: the bearing capacity of a single anchor bolt when the minimum base thickness is met, there is no margin, and the spacing affects the correct installation; 2. The data in the table is based on C30 base concrete. If the base grade changes, the concrete strength influence coefficient should be added according to the specification; 3. The bearing capacity design value in the table includes the material partial safety factor; 4. If you need to know the bearing capacity limit of the anchor bolt, please contact our sales to get the corresponding test report.

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Self Cutting Mechanical Anchor

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