4-Inch (100mm) Crimped Cup Brush for Angle Grinders

Brief Overview

This 4-inch crimped cup brush delivers aggressive wire action for demanding surface preparation tasks. The densely packed, crimped stainless-steel bristles provide excellent material removal rates on welded joints, rust, paint, and oxidation. Built for standard angle grinder mounts, it's an essential accessory for fabrication shops, maintenance crews, and metal finishing operations. If you require finer wire configurations, consider pairing this with a smaller twisted-wire alternative for varied finishing capabilities.

Key Features

• Crimped Wire Construction: Tightly crimped stainless-steel bristles create a wavy, aggressive abrasive surface for maximum cutting efficiency
• 100mm (4-Inch) Cup Diameter: Full-size cup ideal for covering large surface areas in a single pass
• Stainless-Steel Bristles: Corrosion-resistant material extends brush life and prevents contamination in stainless or food-grade applications
• Standard Arbor Mount: Central mounting hole accepts standard angle grinder arbors (typically 5/8"-11 or M14 threads, depending on grinder model)
• Flared Cup Design: Bristles angle outward naturally, maintaining contact across the full cup face for consistent material removal

Why Resellers Stock This

High-Velocity Turnover: Cup brushes are consumable wear items with predictable replacement cycles—customers need continuous supply.

Broad Application Base: Welders, fabricators, maintenance technicians, and metal shops all require multiple cup brushes in various sizes for different tasks.

Margin-Friendly Pricing: Commodity-level production costs support healthy resale margins, especially on bulk orders.

Size Versatility: The 4-inch size covers 80% of industrial grinder work; pairing with smaller 2.5 to 3-inch options lets you capture complete workshop inventories.

Technical Specifications

Attribute	Specification
Cup Diameter	100mm (4 inches)
Wire Type	Stainless Steel, Crimped
Wire Density	High-density pack for aggressive action
Bristle Configuration	Flared cup shape with wavy crimp pattern
Arbor Mount	Standard central hole (5/8"-11 or M14, grinder-dependent)
Ideal Applications	Rust removal, weld cleanup, paint stripping, surface preparation
Max RPM	Grinder-dependent (typically 2,000–6,000 RPM for safety)
Material Removed Per Pass	Heavy (most aggressive of crimped styles)

Application Context

This brush excels in high-speed grinding environments where aggressive material removal justifies the faster wear rate. Best suited for:

• Weld bead cleanup and joint smoothing
• Heavy rust and scale removal from structural steel
• Paint stripping on metal substrates
• Deburring and edge preparation before welding

Closing Recommendation

Stock the 4-inch crimped cup brush as your primary aggressive-action offering. Complement it with knotted or twisted alternatives in smaller sizes to serve customers needing precision finishing or fine-detail work. This size-and-style mix ensures every fabrication shop in your territory has the right tool on hand.

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Recommended Order Quantity for Resellers: 12–24 units per SKU (case volume dependent) to ensure consistent availability and capture repeat purchasing patterns.