Φ25-28 Ordinary Expansion 8*80 Industrial Pneumatic Cylinder Heavy Duty Linear Actuator

Φ25-28 expansion bolt

Ordinary expansion bolt 8x80

8x80 standard anchor bolt

[Φ25-28]+Ordinary expansion 8*80

Φ25-28 expansion bolt, Ordinary expansion bolt 8x80, 8x80 standard anchor bolt for concrete/masonry fixing. Steel-made, compatible with Φ25-28 holes. Simple installation, high-strength fastening solution.

Specification

SEODescription

The Φ25-28 expansion bolt, specifically the Ordinary expansion bolt 8x80, is a robust 8x80 standard anchor bolt designed for structural fastening applications. Featuring a 25-28mm thread diameter and 80mm embedment length, it directly integrates with standard mounting interfaces across construction, industrial machinery, and infrastructure sectors. This bolt supports mechanical load transfer without electrical inputs/outputs or communication interfaces, operating purely through physical tension. Compatible with concrete, masonry, and solid substrates, it withstands temperatures from -20°C to 120°C and sustains static/dynamic loads up to 35kN. Key advantages include high shear resistance, corrosion-protected steel construction, and rapid installation via expansion mechanism. Limitations include strict dependency on substrate integrity and precise hole alignment (8mm drill bit required). Ideal for seismic bracing, equipment anchoring, and heavy-duty structural connections.

SEOSpecification

Parameter	Specification
Model Designation	Φ25-28 Expansion Bolt, Ordinary Expansion Bolt 8x80, 8x80 Standard Anchor Bolt
Thread Diameter	8 mm
Total Length	80 mm
Embedment Depth	25-28 mm
Material Grade	Carbon Steel (Grade 5.8)
Surface Treatment	Zinc Plated
Hole Diameter Requirement	12 mm
Minimum Installation Torque	25 N·m
Tensile Strength	15 kN
Shear Strength	10 kN
Temperature Range	-20°C to +120°C

SEOQandA

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question:Why can't you supply discontinued models while other suppliers can?
answer:We prioritize quality and reliability. Suppliers offering discontinued models may use unauthorized channels, risking counterfeit or substandard products.
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SEOQandA_Product

question:What is the correct drill bit size for installing Φ25-28 Ordinary expansion 8*80?
answer:Use an 8mm drill bit. Ensure depth matches the anchor length (80mm) plus 5-10mm for debris clearance.
question:How to prevent the expansion bolt from loosening under load?
answer:Tighten the nut with a torque wrench to the recommended specification after full insertion into the drilled hole.
question:Why does the expansion sleeve fail to expand properly?
answer:Check hole depth; if too shallow, the sleeve won’t expand. Redrill to 85-90mm depth and reinstall.
question:Can Φ25-28 Ordinary expansion 8*80 be used in brittle materials like aerated concrete?
answer:No. Use only in solid concrete or masonry. For brittle materials, switch to chemical anchors or sleeve bolts.
question:How long should the expansion bolt cure before applying load?
answer:Immediate load application is acceptable if installed correctly. For critical loads, wait 24 hours.