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  • Rear Expansion Anchor

Rear Expansion Anchor

Short Description:

The product consists of: screw, annular shearing edge, thrust sleeve, gasket, nut.

Anchor material: ordinary 4.9 and 8.8, 10.8, 12.9 alloy steel and A4-80 stainless steel.

Surface is galvanized:
The thickness of galvanized coating is ≥5 microns, and it is used in ordinary indoor and outdoor environments:
The thickness of galvanized coating is >50 microns, and it is used in corrosive environment;
The surface treatment can also be upgraded according to the anti-corrosion requirements, and the anti-corrosion treatment of sherardizing or higher can be carried out;
A4-80 stainless steel for use in corrosive environments.


Product Detail

Product Tags

Product Description

1. Use the tangent of the reaming wall at the bottom of the hole and the locking key of the mechanical anchor to form a lock body effect, complete Anchorage.
2. It can withstand quite high loads and can be used to withstand shock and earthquake loads.
3. Rear-expanding mechanical bolts have a real mechanical health-enhancing effect, but the reaming drills are specially designed.
4. The non-expansion force generated by the mechanical locking key ensures the effective transmission of the force in the concrete.

Scope of application:
1. It is suitable for occasions with extremely high safety requirements, such as nuclear power plants.
2. Installation and fixing of large equipment such as industrial plants, cranes, nuclear power plants, etc.
3. Connection and fixation of various wall structures and steel structures.
4. Installation and fixing of various pipes in civil buildings such as water and electricity pipes and fire pipes.
5. Installation and fixation of various pipes and cable brackets such as iron ridges, tunnels, bridges, etc.
6. Installation of various anti-theft doors, fire doors and anti-theft windows.

Technical Parameters

Technical parameters of post-expanding mechanical anchor bolts (C20/C80 cracked concrete)
Screw diameter Anchor type Drilling diameter Effective burial depth Drilling depth Bolt length Fixture hole(mm) Minimum bolt Minimum substrate Tightening torque Tensile standard value (KN) Design Shear Resistance (KN)
(mm) (mm) (mm) (mm) Preset penetrating Spacing(mm) Thickness(mm) (KN) Above C25 Above C80 Preset penetrating
M10 M10/18×60 18 60 80 110 12 20 60 90 50 21 30.7 19.5 33
M10/18×100 100 120 150 100 150 41.7 49.5
M12 M12/18×80 18 80 100 130 14 20 80 120 80 31.9 47 28.3 44.9
M12/18×100 100 120 150 100 150 42.5 65.7
M12/18×120 120 140 170 120 180 55.7 76.7
M12/18×150 150 170 200 150 225 76.7 -
M12/22×80 22 80 100 130 24 80 120 31.9 47.1 58.6
M12/22×100 100 120 150 100 150 42.5 65.7
M12/22×120 120 140 170 120 180 55.7 76.7
M12/22×150 150 170 200 150 225 76.7 -
M16 M16/22×130 22 130 150 190 18 24 130 195 180 67.5 97.3 50.2 60.6
M16/22×150 150 170 210 150 225 83.3 121.7
M16/22×180 180 200 240 180 270 110.5 133.7
M16/22×200 200 220 260 200 300 133.7 -
M16/28×130 28 130 150 190 30 130 195 67.5 97.3 85.5
M16/28×150 150 170 210 150 225 83.3 121.7
M16/28×180 180 200 240 180 270 110.5 133.7
M16/28×200 200 220 260 200 300 133.7 -
M20 M20/28×150 28 150 170 230 34 32 150 225 300 84.3 122.7 77.5 87
M20/28×180 180 200 260 180 270 111.7 158.9
M20/28×250 210 230 290 210 315 135.3 208.5
M20/28×210 250 270 330 250 375 178.7 -
M20/28×280 280 300 360 280 420 208.5 -
M20/35×150 35 150 170 230 40 150 225 84.3 122.7 130
M20/35×180 180 200 260 180 270 111.7 158.9
M20/35×210 210 230 290 210 315 135.3 208.5
M20/35×250 250 270 330 250 375 178.7 -
M20/35×280 280 300 360 280 420 208.5 -
M24 M24/32×200 32 200 220 300 28 36 200 300 500 134 186.3 113.4 120
M24/32×250 250 270 350 250 375 180.1 258.9
M24/32×300 300 320 400 300 450 236.7 301.9
M24/32×350 350 370 450 350 525 301.9 -
M24/38×200 38 200 220 300 42 200 300 134 186.3 158
M24/38×250 250 270 350 250 375 180 258.9
M24/38×300 300 320 400 300 450 236.7 301.9
M24/38×350 350 370 450 350 525 301.9 -
M30 M30/38×350 38 350 370 470 34 42 350 525 700 301 430.9 150.1 159.8
M30/38×450 450 470 570 450 675 434.5 445

Product Features

1. Made for cracked concrete with the highest safety requirements, it can resist the dynamic load and impact load.
2. It has a very high teaching ability, and the effect of anchoring is equivalent to that of surface embedded parts.
3. Smaller torque can be carried by tight travel, complete built-in mechanical lock effect.
4. To adapt to the variable fixation depth and variable fixation thickness.
5. There is no expansion stress, the initial stress on the concrete substrate is small, and it is suitable for small margins and small gaps.

Features:
1. It has stronger tensile, anti-thinning, anti-seismic and other properties, safe and reliable.
2. Small inductive stress, suitable for installation and fixation with small margins, small spacing and high spacing.
3. Applicable to all environments that are not suitable for pre-planting or chemical wrong plugging.
4. There is an obvious installation scale on the anchor bolt, which is convenient for installation.
5. According to different use environments, there are different materials to meet the various needs of customers.
6. The specifications of the product are complete, and there are special products for special environments, and can also be customized according to customer requirements. A kind of products to be special specifications.
7.The mechanical auxiliary bolt of the rear expansion hospital has a special reaming drill bit, which can quickly ream the hole and install it quickly.

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