#40 Sprocket 25T 3/4" Bore Hardened Black Oxide by HJGuamou - Used condition

#40 Sprocket 25T 3/4" Bore Hardened Black Oxide — Open-Box, 17% Off

Name: #40 Sprocket 25T 3/4" Bore Hardened Black Oxide
Brand: HJGuamou
SKU: awhd-us-b0fyhlrwsl
Price: 26.65 USD
Availability: InStock

Brand: HJGuamou

Condition: Used - Mint

$26⁶⁵

$32⁰⁰

-17% Save $5³⁵

Updated: 11 days ago

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Description

Precision-Machined for Perfect Fit: 25 hardened tooth with 3/4" bore, 3/16" x 3/32" keyway, and two setscrews. Ultra-precise CNC machining ensures seamless integration and vibration-free power transmission. Premium AISI 1045 Steel with Hardened Teeth: High-temperature quenched for exceptional wear resistance and durability in demanding applications. ANSI-Compliant Reliability: Model 40BS25 features a 0.75-in (3/4") precision-machined bore, including two setscrews, and one 3/16" key. Fully meets ANSI standards for reliable performance. Black Oxide Coating for Corrosion Resistance: All-over rust-proof finish extends service life, even in harsh environments. Low-Maintenance Versatility: Requires only lubrication for easy upkeep. Ideal for industrial equipment, conveyors, agricultural machinery, and DIY projects. #40 Roller Chain Sprocket – 25 Tooth Rear Sprocket with 3/4" Finished Bore (40BS25-3/4)

Popular balanced rear sprocket for mini bikes, go-karts, and light industrial applications.

Key features:
25 Tooth design = perfect speed & torque balance for everyday riding
Precision 3/4" finished bore with 3/16" × 3/32" keyway – direct fit on most 3/4" axles
Includes 2 set screws and 1 square key = secure mounting with no spinning
Full black oxide finish = excellent rust protection for outdoor use
Hardened 1045 carbon steel teeth = long life and quiet operation
Type B hub = perfect chain alignment

Also suitable for light-duty conveyors, farm equipment, packaging machines, and material handling systems.

Package includes:
1 × #40 25-tooth rear sprocket (40BS25-3/4)
1 × matching square key
2 × set screws

Install in under 5 minutes – slide on axle, insert key, tighten 2 screws.

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Product Details

SKU:: awhd-us-b0fyhlrwsl
Model:: 40BS12-1/2
Country:: US
ASIN:: B0FYHLRWSL

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $5 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

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Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.