Product Overview

Rigid, Safe Backing + Continuous Cutting Flaps

Multiple abrasive cloth flaps (commonly aluminum oxide / zirconia / ceramic coated cloth) are layered onto a fiberglass-reinforced backing plate. During operation, flaps engage progressively, delivering steadier cutting and smoother blending, while the fiberglass backing provides structural support and heat resistance.

 

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Technical Specifications

Configurable to Market Standards

Item	Specification
Product Type	Fiberglass backing flap discs
Abrasive	AO / Zirconia / Ceramic options
Shape	Type 27 (Flat) / Type 29 (Conical)
Outer Diameter	4″ / 4.5″ / 5″ / 7″
Arbor Hole	5/8″ / 7/8″ (market-based)
Grit Range	P36 – P120 (extendable)
Backing Plate	Fiberglass reinforced backing
Max RPM	Marked per size & standard

 

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Processing Logic

3-in-1: Cut, Cover, Blend

Flap discs win through:

• Multi-point cutting: load is distributed, reducing gouging;
• Progressive contact renewal: flaps wear gradually, keeping a stable cutting feel;
• Angle-driven performance: grinder angle shifts the result from heavy grinding to blending/finishing—ideal for weld blending and contour transitions.

 

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Backing Structure & Performance Limits

Fiberglass: Strength & Heat;

Limits: Speed Rating & Side Impact

• Strengths: fiberglass backing offers rigidity, heat resistance, and deformation control for medium-to-high load angle grinding.
• Limits: flap discs are coated-abrasive tools, not hard grinding wheels—avoid aggressive side loading or prying on sharp edges.

 

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Machine Compatibility & Operating Conditions

Angle Grinders: RPM Rating, Guarding & Mounting

• Machines: angle grinders (electric/pneumatic).
• Must match: disc diameter × arbor size, grinder RPM ≤ disc max RPM, proper guard and flange set.

Profile selection:

• Type 27 (flat): better for surface blending and flatter contact;
• Type 29 (conical): better for aggressive grinding, weld reinforcement removal, and edge work.

 

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Engineering Comparison

Where Flap Discs Fit vs Grinding Wheels & Fiber Discs

Comparison	Fiberglass Flap Discs	Grinding Wheels	Fiber Discs (with backing pad)
Stock removal	High	Highest	Medium–High
Weld blending	Excellent	Average (gouging risk)	Good (pad-dependent)
Scratch control	Good	Weaker	Good
Heat risk	Medium	Medium–High	Medium
Overall value	High	Medium	Medium–High

 

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Typical Applications & Industries

Workhorse Disc for Metal Fabrication

• Weld reinforcement removal, weld blending, spot dressing
• Deburring/chamfering for structural steel and sheet metal
• Rust/scale removal and old paint cleaning
• Stainless surface conditioning (prefer finer grits and controlled angles)

 

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Grit Range & Recommended Use

From Grinding to Blending

Typical recommendation

• P36–P40: heavy grinding, fast weld removal
• P60: general-purpose removal + blending (most popular)
• P80–P120: scratch refinement and surface blending
• P150+: light finishing depending on material and spec

 

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OEM & ODM Capability

From Specs to Structure Engineering

OEM/ODM supported: diameter/arbor systems, Type 27/29, abrasive systems (AO/ZA/Ceramic), flap count & layup angle, backing thickness, private label & packaging, carton plans, and compliance markings.

 

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Why Choose Us

Consistency Comes from System Control

Real differentiation is structural: backing rigidity, flap layup angle, and bonding system drive cutting feel, heat behavior, and life consistency. We deliver industrial consumables with stable structure control and batch-to-batch reliability.

 

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Usage & Storage Recommendations

Safety & Results Depend on RPM + Angle + Pressure

• Always match disc speed rating to grinder RPM; never overspeed; use guard and PPE.
• Maintain a steady working angle; avoid dwelling in one spot to reduce overheating/discoloration.
• Store dry and out of sunlight; avoid moisture and heavy compression; reseal to prevent dust and humidity after opening.