Best Black and Decker Alligator Chain (2026)

Keeping my garden equipment in top shape is essential for maintaining my raised beds and pruning back overgrown shrubs. When it comes to the black and decker alligator chain, I have spent time evaluating the current market options to see which replacements offer the best reliability for routine maintenance.

Finding a compatible black and decker alligator chain can be tricky given the variety of models available. Whether you are using the 3PC 8 Inch Polesaw Chain or the 6 Inch Chainsaw Chain, understanding your specific tool's drive link requirements is the first step toward a successful pruning session.

In this review, I focus on the most practical options for home gardeners. I have looked at everything from the 6 Inch Chainsaw Chain for budget-conscious users to the more robust 2PC 12 inch Chainsaw Chain for larger tasks, ensuring you have the right data to make an informed purchase.

Quick Picks for Best Black and Decker Alligator Chain

	Best Overall	3PC 8 Inch Polesaw Chain	Compatibility: LPP120/NPP2018	Drive Links: Not listed	Use Case: Pole saw pruning	View Latest Price	Read Review
	Best Budget	6 Inch Chainsaw Chain	Compatibility: LLP120/LP1000	Drive Links: Not listed	Use Case: Small lopper tasks	View Latest Price	Read Review
	Best Premium	4x 10-Inch Chainsaw Chain	Compatibility: LCS1020	Drive Links: Not listed	Use Case: Heavy duty pruning	View Latest Price	Read Review
	Best Compact	2PC 12 inch Chainsaw Chain	Compatibility: LCS1240	Drive Links: Not listed	Use Case: Mid-sized cutting	View Latest Price	Read Review
	Best Brushless	Replacement 587579-00 Cutting Chain	Compatibility: LP1000/NLP1800	Drive Links: Not listed	Use Case: Alligator Lopper maintenance	View Latest Price	Read Review
	Best Value	6 Inch Chainsaw Chain 1/4 Pitch	Compatibility: General 6-inch	Drive Links: 42	Use Case: Standard pruning	View Latest Price	Read Review

Selecting the correct replacement chain for your Black and Decker alligator lopper ensures that your pruning tasks remain efficient and safe throughout the growing season.

How We Compared Best Black and Decker Alligator Chain

We compared the product-listing details available for each option, including the stated use, design, and notable features. Availability and specifications can change, so confirm the current listing details before buying.

Product Comparison: Best Black and Decker Alligator Chain (2026)

1. 3PC 8 Inch Polesaw Chain

   
   
   
   Best Overall
   View Latest Price
   • Length8 Inch
   • CompatibilityLPP120/NPP2018
   • MaterialSteel
   • Best forPole saw work
   • StandoutThree pack value

   This three-pack stands out because it offers a reliable supply of replacements for the LPP120 pole saw. Having extra chains on hand is a smart move for any gardener who manages mature trees or dense brush near their raised beds.

   It is designed specifically for users who rely on the 20V system for their regular yard maintenance. If you own the LPP120 or the older 18V NPP2018, this kit is a highly practical choice.

   In my evaluation of the specs, the 8-inch length is perfectly suited for the specific bar size of these units, ensuring a smooth fit.

   The trade-off here is that you are locked into a specific set of models; if you switch tools, these may not fit your new equipment.

2. 6 Inch Chainsaw Chain

   
   
   
   Best Budget
   View Latest Price
   • Length6 Inch
   • CompatibilityLLP120/LP1000
   • MaterialSteel
   • Best forSmall loppers
   • StandoutAffordable pricing

   This 6-inch chain is a straightforward, no-frills replacement for the popular Alligator Lopper series. It is a solid pick for those who just need a quick fix to get back to clearing branches.

   It is intended for gardeners who prioritize cost-effectiveness. If you have an older LP1000 or a newer LLP120, this chain is designed to get the job done.

   I evaluated the provided data and found it covers a wide range of legacy models, which is helpful for keeping older tools running.

   The trade-off is the lack of detailed technical specifications, meaning you should double-check your manual before ordering.

3. 4x 10-Inch Chainsaw Chain

   
   
   
   Best Premium
   View Latest Price
   • Length10 Inch
   • CompatibilityLCS1020
   • MaterialSteel
   • Best forHeavy duty
   • StandoutFour pack quantity

   This premium four-pack is a serious investment for anyone with a heavy workload. It is specifically tailored for the LCS1020 20-Volt model, offering a consistent cutting edge.

   It is perfect for the gardener who wants to minimize downtime during a busy spring cleanup. Having four chains means you can rotate them out and sharpen them at your own pace.

   Based on my review of the product data, this set is built to handle the demands of the 10-inch bar length on the LCS1020.

   The main trade-off is the initial cost, which is higher than buying a single replacement chain, though the per-unit price is competitive.

4. 2PC 12 inch Chainsaw Chain

   
   
   
   Best Compact
   View Latest Price
   • Length12 Inch
   • CompatibilityLCS1240
   • MaterialSteel
   • Best forMid-sized saws
   • StandoutDual pack

   If you use the LCS1240, this two-pack provides a nice balance between performance and convenience. It is a reliable option for those who need a 12-inch reach for their garden maintenance.

   This is aimed at users who need a slightly longer bar for thicker branches that might be encroaching on their garden space.

   I analyzed the compatibility list and noted its versatility, as it also fits certain Craftsman models, which is a nice bonus.

   The trade-off is that it is limited to the 12-inch bar size, so it will not work if you have a smaller lopper.

5. Replacement 587579-00 Cutting Chain

   
   
   
   Best Brushless
   View Latest Price
   • LengthNot listed
   • CompatibilityLP1000/NLP1800
   • MaterialSteel
   • Best forAlligator Loppers
   • StandoutDirect replacement

   This specific replacement part is designed for the Alligator Loppers, making it a go-to for those maintaining the classic LP1000 or NLP1800 models.

   It is for the gardener who prefers OEM-style parts to ensure the best possible fit for their equipment.

   I reviewed the data and found this is a focused part meant to keep the specific cutting mechanism of the Alligator Lopper functioning correctly.

   The trade-off is that technical specs like drive links are not explicitly detailed, so verify your model number carefully.

6. 6 Inch Chainsaw Chain 1/4 Pitch

   
   
   
   Best Value
   View Latest Price
   • Length6 Inch
   • CompatibilityGeneral 6-inch
   • MaterialSteel
   • Best forStandard bars
   • Standout42 drive links

   This chain stands out because it provides clear technical specs, such as the 1/4-inch pitch and 42 drive links. This level of detail is a huge help when you are trying to match a chain to your saw.

   It is ideal for the practical gardener who knows their saw's specs and wants a reliable, affordable replacement.

   My evaluation of the data suggests that if your saw requires 42 drive links, this is a very safe bet for your garden toolkit.

   The trade-off is that it is a generic replacement, so you must be confident in your saw's drive link count before purchasing.

What to Look for in Best Black and Decker Alligator Chain

Drive Link Count Accuracy

The most critical factor when selecting a replacement chain is the drive link count, which must match your specific model exactly to ensure the chain tracks properly in the guide bar. If your chain has too many or too few links, it will either fail to tension correctly or cause the motor to stall under load. When pruning branches near your raised-bed irrigation lines or delicate vegetable starts, a loose chain is a significant safety hazard that can derail during operation. Always count the drive links on your old chain before ordering a replacement, as even minor variations in model years can result in different bar lengths. A perfectly matched link count ensures smooth cutting performance and prevents unnecessary wear on the drive sprocket, keeping your garden maintenance tools in peak working condition.

Pitch and Gauge Compatibility

Understanding the pitch and gauge of your chain is essential for compatibility with your Black and Decker unit. The pitch is the distance between the drive links, while the gauge is the thickness of the drive link itself. If these specifications do not match your guide bar, the chain will either not fit at all or will bind, leading to overheating and potential motor damage. For gardeners working in tight spaces, such as pruning over-hanging limbs near irrigation manifolds or raised beds, a properly seated chain is vital for precision. Using the wrong gauge can cause the chain to wobble, resulting in ragged cuts that damage the tree or shrub bark, potentially exposing your plants to disease. Always verify these technical measurements against your manual to ensure a secure, professional fit.

Material Hardness and Durability

Look for chains constructed from high-carbon steel that have been heat-treated for superior hardness and wear resistance. Because alligator loppers are often used for ground-level clearing and aggressive pruning, the teeth are prone to dulling if they make contact with soil or debris near your garden beds. A chain with high-quality chrome plating on the cutters offers better resistance to rust and oxidation, which is particularly important if you store your tools in humid sheds or outdoor gear boxes. Durable materials mean fewer sharpening intervals and a longer overall lifespan for the product. Investing in a hardened steel chain allows you to clear woody debris from around your irrigation zones without worrying about immediate degradation, ensuring your tool remains sharp enough to make clean, quick cuts throughout the season.

Cutter Profile and Style

The cutter profile, often referred to as semi-chisel or full-chisel, dictates how aggressively the chain bites into wood. For standard garden maintenance and clearing deadwood around raised beds, a semi-chisel chain is often preferred because it stays sharp longer and is more forgiving when it accidentally touches soil or grit. A full-chisel chain cuts faster but dulls more quickly, making it better suited for clean, dry timber rather than ground-level pruning. When working in small spaces, you want a chain that provides controlled, predictable cuts to avoid damaging nearby irrigation lines or delicate perennial plantings. Choosing the right cutter style helps you balance the need for speed with the requirement for precision, ensuring that your pruning workflow remains efficient and safe for your surrounding garden infrastructure.

Ease of Installation

Consider how easily a replacement chain can be mounted and tensioned on your specific Black and Decker model. Many users prefer chains that come pre-lubricated or are designed for tool-free tensioning systems, as this reduces the time spent on maintenance during a busy gardening day. If you are frequently switching between different pruning tasks—such as clearing brush away from soil-contact areas or trimming overhead branches—a chain that is simple to install saves significant time. Look for products that include clear instructions or are compatible with standard tensioning mechanisms. A chain that is difficult to seat properly can lead to uneven tension, which puts excess strain on the motor and can result in premature failure of the drive sprocket, potentially interrupting your irrigation maintenance schedule.

Safety and Kickback Reduction

Prioritize chains that feature low-kickback design elements, such as specialized depth gauges or bumper links. Kickback occurs when the nose of the guide bar strikes an object, causing the tool to jump back toward the operator, which is a major risk when working in cramped or awkward garden spaces. By choosing a chain engineered to minimize this reaction, you increase your safety while pruning near raised-bed edges or trellis systems where your footing might be limited. These safety features do not significantly compromise cutting speed but provide essential protection during intensive pruning sessions. Always ensure that the chain you purchase is explicitly rated for safety and is compatible with the anti-kickback features built into your Black and Decker alligator lopper’s guide bar and guard assembly.

Value and Multi-Pack Options

For dedicated gardeners who perform frequent maintenance, purchasing multi-pack replacement chains often provides better long-term value. Having a spare chain on hand is a smart strategy, especially if you accidentally hit a rock or wire while clearing debris near your garden beds, which can instantly dull or damage a sharp chain. Buying in bulk not only reduces the per-unit cost but also ensures you are never forced to stop your work mid-project due to a broken or damaged chain. When evaluating these packs, check that each chain is individually wrapped to prevent pre-installation corrosion. This approach is highly practical for maintaining irrigation workflows and keeping your garden equipment ready for immediate use, ensuring that your pruning schedule is never interrupted by the need for a last-minute replacement order.

Frequently Asked Questions

How often should I replace the chain on my Black and Decker alligator lopper?

You should replace your chain whenever it becomes excessively dull, shows signs of cracked links, or no longer holds tension properly. In a garden setting, if you notice the lopper pulling to one side or producing sawdust instead of wood chips, it is time for a change. If you frequently prune near soil-contact areas or raised-bed borders, grit can dull the teeth faster than normal. A good rule of thumb is to inspect the teeth after every three to four hours of heavy use. Replacing a damaged chain promptly protects the motor from strain and ensures your pruning remains precise and safe.

Can I sharpen my Black and Decker alligator chain, or should I replace it?

You can absolutely sharpen your chain using a round file of the correct diameter, provided the cutters still have enough material left to hold an edge. However, if the chain has been damaged by contact with stones or wire near your garden irrigation, it may be more cost-effective to replace it. Repeated sharpening eventually reduces the cutter size until it can no longer effectively clear wood. For most home gardeners, keeping a spare chain on hand while sharpening the old one is the most efficient workflow for maintaining your outdoor equipment and garden beds.

Does the chain length vary between different Black and Decker alligator models?

Yes, chain lengths vary significantly depending on the specific model of your alligator lopper, such as the LPP120B or LCS1240. It is vital to check your manual or the original packaging for the specific drive link count and bar length. Using a chain that is even one link off will prevent it from seating correctly on the sprocket or reaching the tensioner, which can cause the chain to snap or damage the guide bar. Always verify your model number before purchasing, as generic 'alligator' chains are not universal across the entire product line.

How do I ensure the chain is properly tensioned for pruning near raised beds?

Proper tension is achieved when the chain is snug against the bottom of the guide bar but can still be pulled away slightly by hand without leaving the bar groove. When working near delicate raised-bed structures or irrigation tubing, a loose chain is dangerous as it can whip or derail. After installing a new chain, run the tool for a minute, then stop and re-check the tension, as new chains often stretch slightly during their first few minutes of operation. Always adjust the tension until it feels secure and tracks smoothly along the bar.

Why does my chain keep coming off the guide bar during operation?

A chain that repeatedly derails is usually caused by incorrect tension, a worn-out drive sprocket, or a damaged guide bar groove. If the chain is too loose, it will easily jump off the track, especially when pruning thick branches or clearing debris near garden soil. Check the tension first, as this is the most common culprit. If the tension is correct, inspect the guide bar for burrs or physical damage that might be preventing the chain from sitting deep enough in the groove. A worn sprocket may also fail to drive the chain links effectively, leading to frequent derailments.

Are there specific chains better suited for pruning near irrigation lines?

When pruning near sensitive irrigation systems, you want a chain that offers high control and minimal vibration. A semi-chisel chain is generally safer and more predictable than a full-chisel chain, as it is less prone to aggressive 'grabbing' that could lead to accidental contact with your irrigation tubing. Additionally, ensuring your chain is kept sharp is the best way to maintain control; a dull chain requires more force, which increases the likelihood of slipping and hitting unintended targets in your garden. Always prioritize a sharp, well-tensioned chain to keep your pruning work focused and away from your delicate infrastructure.

What is the difference between a 6-inch and 12-inch alligator chain?

The difference is the total length of the cutting surface, which is determined by the length of the guide bar on your specific lopper model. A 6-inch chain is designed for smaller, more compact units used for light pruning, while a 12-inch chain is for larger, more powerful models capable of cutting thicker limbs. These are not interchangeable; you must use the chain length that matches your specific guide bar. Using the wrong size is physically impossible in most cases, but attempting to force a mismatch can cause severe damage to the motor and the internal gearing of your tool.

How do I prevent my chain from rusting while stored in my garden shed?

To prevent rust, always clean your chain of sap and wood debris after each use, as these materials hold moisture against the metal. After cleaning, apply a light coat of high-quality bar and chain oil to the links to create a protective barrier against humidity. If you live in a particularly damp area, consider storing your lopper in a dry, climate-controlled space rather than an open shed. Keeping the chain properly oiled and free of organic matter is the best defense against corrosion, ensuring your tool is ready for your next pruning session in the garden.

Can I use a generic chainsaw chain instead of a Black and Decker specific one?

You should only use a chain that is specifically manufactured or designated for your Black and Decker model. While some generic chains might appear to have the same pitch and gauge, they may lack the specific drive link design or safety features required for the alligator lopper’s unique clamping mechanism. Using an unauthorized chain can lead to poor performance, increased risk of kickback, or damage to the lopper’s internal components. Always stick to replacement chains that are verified to be compatible with your specific model number to ensure safety and long-term reliability.

Is it normal for a new chain to smoke or get hot during the first use?

A new chain may get slightly warm as it 'breaks in' and the links seat into the guide bar groove, but it should never smoke. If you notice smoke, it usually indicates a lack of lubrication or that the chain is tensioned far too tightly. Ensure your oil reservoir is filled with fresh bar and chain oil and that the oiler is functioning correctly. If the chain is too tight, it will create excessive friction against the bar, generating heat that can ruin the temper of the steel. Always verify your tension and lubrication before starting any major pruning project.