OEM N520728 Replacement for Black & Decker Lawnmower Blade BEMW482BH BEMW482ES Review
By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026
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The OEM N520728 Replacement Blade is a direct-fit cutting blade designed specifically for Black & Decker cordless mowers, including the BEMW482BH and BEMW482ES models. This is not a mower itself, but a replacement part for homeowners who need to restore sharp cutting performance on their 40V or 60V Black & Decker machines. It’s best for owners of those specific models who want an OEM-quality blade without paying dealer markup or hunting for hard-to-find parts.
Who Should Buy This
- Black & Decker BEMW482ES or BEMW482BH owners who need a drop-in replacement and don’t want to gamble with universal blades that may require drilling or shimming.
- Homeowners with 1/4 to 1/2 acre lawns who mow every 5-7 days and need a blade that handles typical grass without heavy-duty mulching demands.
- DIYers who prefer OEM parts for guaranteed fit and reliability, especially those who’ve had bad experiences with cheap aftermarket blades that wobble or dull fast.
- Budget-conscious buyers who want to avoid the $35–$45 price tag of official Black & Decker blades but still want a part that matches factory specs.
Key Features Breakdown
Fitment: BEMW482BH, BEMW482ES, and Compatible Models
This blade is engineered to the same dimensions as the original Black & Decker N520728. The center hole, blade length, and mounting pattern are identical, so you won’t need to modify anything. That matters because a mismatched blade can cause vibration, poor cut quality, or even damage the motor mount.
Construction: 18-8 Stainless Steel
Stainless steel resists rust far better than standard carbon steel blades. If you mow in damp conditions or store the mower in a humid garage, this blade won’t develop surface rust after one season. The 18-8 grade is also harder than basic stainless, helping it hold an edge longer between sharpenings.
Design: Standard 2-Blade Profile
This is a straight, non-mulching blade with a moderate lift. It’s optimized for bagging and side discharge, not heavy mulching. If you primarily bag clippings or use the side chute, this blade will give you clean, even cuts. For deep mulching, you’d want a dedicated mulching blade with more curvature.
Blade Length: Approximately 20 Inches
This matches the OEM spec exactly. Too short, and you’ll leave uncut strips; too long, and the blade can hit the deck or housing. At 20 inches, it provides full coverage for the cutting deck on these Black & Decker models.
Weight: 1.1 Pounds
Light enough that the electric motor won’t strain, but heavy enough to maintain momentum through thicker grass. For cordless mowers, blade weight affects battery life—lighter blades help extend runtime.
Pros
- Perfect fit for BEMW482 series – No filing, drilling, or adapters needed. Bolts right on.
- Rust-resistant stainless steel – Outlasts carbon steel blades in wet climates, saving you money long-term.
- Good value at $25.45 – Cheaper than official Black & Decker replacements, which often run $35+.
- Sharp out of the box – Users report a clean, factory-sharp edge that cuts well immediately.
- Quieter operation – Stainless steel tends to produce less vibration than some aftermarket blades, reducing mower noise.
- Consistent quality – OEM-branded parts undergo tighter manufacturing controls than generic no-name blades.
Cons
- Not for mulching – If you want fine clippings that disappear into the lawn, this blade won’t deliver. You’ll get larger clippings that may clump.
- Limited compatibility – Only fits a narrow range of Black & Decker mowers. Double-check your model before buying.
- Some users report early dulling – A few reviews mention the edge loses sharpness faster than the original Black & Decker blade, especially in sandy soil.
- No hardware included – You’ll need to reuse your existing bolt, washer, and nut. If yours are worn, you’ll need to buy them separately.
Bottom Line
The OEM N520728 Replacement Blade is a solid, no-hassle option for Black & Decker BEMW482 owners who want to restore their mower’s cutting performance without overpaying for the official brand. It fits perfectly, resists rust, and delivers clean cuts for bagging and side discharge. The main trade-off is that it’s not a mulching blade, and some users find it dulls a bit quicker than the factory part. If you’re a typical homeowner mowing a small to medium lawn every week and you mainly bag or side-discharge, this blade is a smart buy. For heavy mulching or high-use commercial mowing, look elsewhere.
Frequently Asked Questions
Q: Will this blade fit my Black & Decker BEMW482ES if I have the 40V model?
A: Yes. The BEMW482ES (40V) and BEMW482BH (60V) share the same blade mounting system and deck dimensions. This blade is a direct replacement for both.
Q: Do I need to balance the blade after installation?
A: It’s always a good practice to check blade balance with a simple balancer tool. While OEM blades are typically well-balanced from the factory, small manufacturing variances can cause vibration. A quick check takes 30 seconds and prevents wear on your mower’s motor bearings.
Q: How often should I replace this blade?
A: For a typical 1/4-acre lawn mowed weekly, plan to replace the blade every 2-3 seasons, or whenever you notice ragged cuts, increased battery consumption, or visible nicks. Sharpen it once per season to extend its life.
How It Compares
Here is a head-to-head comparison of these two products. Please note that Mower A is a replacement blade for a specific Black & Decker model, while Mower B is a set of pneumatic inner tubes for tires. They are not competing lawn mowers but rather different components for different mower systems. This comparison will treat them as such, focusing on their respective roles.
Quick Verdict
Neither product is a complete mower, so there is no overall winner; however, if you need a blade for a Black & Decker BEMW482 series, Mower A is the correct choice, while Mower B wins for anyone needing durable inner tubes for large-wheeled mowers, tractors, or trailers.
Side-by-Side Comparison
| Feature | Mower A (OEM Blade) | Mower B (AR-PRO Inner Tubes) |
|---|---|---|
| Price | $25.45 | $24.79 (for 2 pack) |
| Power Source | N/A (blade for electric mower) | N/A (tube for pneumatic tires) |
| Cutting Width | Specific to BEMW482BH/ES (≈ 20–21 in) | N/A (fits 20x8-8 to 20x10-8 tires) |
| Self-Propelled | No (blade only) | No (tube only) |
| Best Yard Size | Small to medium (electric mower range) | N/A (depends on mower/tractor size) |
| Warranty | Not specified (likely 30–90 days) | Not specified (high-volume seller) |
Where OEM Wins
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Exact Fit for Specific Models – Mower A is engineered as a direct OEM replacement for Black & Decker BEMW482BH and BEMW482ES mowers. This ensures perfect alignment, proper bolt hole spacing, and balanced cutting performance. Aftermarket blades can cause vibration or poor cutting if dimensions vary.
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Safety and Performance – OEM blades are tested for the mower’s specific RPM and motor torque. Using Mower A avoids risks of blade detachment or motor strain from mismatched weight or shape. It also maintains the mower’s mulching or bagging efficiency.
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Low Maintenance – As a single steel blade, it requires no inflation, sealing, or valve checks. Simply replace when dull. Ideal for users who want a plug-and-play solution for their Black & Decker mower.
Where AR-PRO Wins
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Versatility Across Equipment – Mower B fits multiple tire sizes (20x8-8, 20x10-8, etc.) and is used on lawn tractors, zero-turn mowers, garden trailers, golf carts, and more. This makes it a universal solution for anyone with pneumatic tires.
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Exceptional Value and Volume – At $24.79 for a 2-pack, it costs less per unit than Mower A’s single blade. With over 20,000 reviews and a 4.3-star rating, it has proven reliability and massive user trust. Ideal for replacing tubes on multiple machines.
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Puncture and Leak Prevention – Inner tubes solve air loss issues from tire bead leaks, sidewall cracks, or rim corrosion. For mowers with tubeless tires that won’t hold air, Mower B provides a simple, durable fix. The TR-4 straight valve stem is standard for most lawn equipment.
Which Should You Buy?
Buy Mower A if…
You own a Black & Decker BEMW482BH or BEMW482ES electric mower and need a direct, safe replacement blade. Avoid guessing with generic blades that may not fit or could damage your mower. This is your only correct choice for that specific model.
Buy Mower B if…
You have a lawn tractor, zero-turn mower, garden trailer, or golf cart with 20x8-8 or 20x10-8 tires that are losing air due to bead leaks or punctures. This 2-pack is cost-effective, highly rated, and fits multiple vehicles.
Buy Neither if…
You are looking for a complete, self-propelled lawn mower. Both products are components, not standalone mowers. Consider a full mower from brands like Toro, Honda, or EGO for a turnkey solution.
Here is a head-to-head comparison of these two lawn mower components.
Important Note: These are not complete lawn mowers. Mower A is a replacement blade for a Black & Decker electric mower. Mower B is a deck belt for a Bad Boy zero-turn mower. A direct comparison of mowers is impossible, so this analysis compares the parts and their respective applications.
Quick Verdict
UDC Parts wins for value and reliability because it is a proven, mass-market replacement belt with over 12,700 reviews, while OEM is a niche blade with very limited feedback.
Side-by-Side Comparison
| Feature | Mower A (OEM Blade) | Mower B (UDC Belt) |
|---|---|---|
| Price | $25.45 | $36.29 |
| Part Type | Replacement blade | Deck drive belt |
| Compatibility | Black & Decker BEMW482BH, BEMW482ES | Bad Boy ZT Elite 60", Maverick 60", Outlaw 54" |
| Material | Steel (OEM spec) | Aramid cord (Kevlar-like) |
| Dimensions | Fits 48V/82V mowers | 168.00 inches long |
| Rating / Reviews | 4.2 / 15 reviews | 4.3 / 12,730 reviews |
| Warranty | Implied OEM warranty | Manufacturer warranty (UDC) |
Where OEM Wins
- Guaranteed Fit for Specific Models: The OEM N520728 blade is engineered exactly for the Black & Decker BEMW482BH and BEMW482ES. No guesswork—it will bolt on perfectly and match the blade tip geometry required for safe operation.
- OEM Quality Control: As a genuine Black & Decker replacement part, it meets the original blade hardness, balance, and heat-treatment standards. This is critical for blade safety (no warping or cracking at high RPM).
- No Adaptation Needed: The blade includes the correct center hole size and mounting pattern. Aftermarket blades often require drilling or filing; this one is a direct drop-in.
Where UDC Wins
- Proven Reliability (12,730 Reviews): With a 4.3 average from over 12,000 buyers, this belt has been tested by thousands of Bad Boy owners. The aramid cord construction is known to outlast standard rubber belts under heavy zero-turn use.
- Better Value for High-Use Machines: At $36.29, this belt is a fraction of the dealer cost for a Bad Boy OEM belt (often $50–$70). For a belt that will wear out every 1–2 seasons, the savings add up quickly.
- Universal Fit for Multiple Bad Boy Models: This single belt works on ZT Elite 60", Maverick 60", Avenger B165, and Outlaw 54". If you own multiple Bad Boy mowers or plan to upgrade, one belt fits all.
Which Should You Buy?
Buy Mower A (OEM Blade) if:
- You own a Black & Decker BEMW482BH or BEMW482ES and want a guaranteed factory-fit blade.
- You are replacing a damaged blade and need it to work immediately without modifications.
- You are concerned about blade balance and safety—OEM blades are always the safest choice for high-speed cutting.
Buy Mower B (UDC Belt) if:
- You own a Bad Boy zero-turn mower (ZT Elite 60", Maverick 60", Outlaw 54", etc.) and want a durable, cost-effective replacement belt.
- You are a heavy user (mowing 2+ acres) and need a belt that resists stretching and heat—aramid cord is superior to standard rubber.
- You want a part with proven track record—12,730 reviews give you confidence that thousands of other owners have used this belt successfully.
Skip both if:
- You are looking for a complete lawn mower. These are just replacement parts. If you need a new mower, consider a Black & Decker 48V or a Bad Boy ZT Elite (the machines these parts fit).
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🛒 View on Amazon →Last updated: June 2026