Best Black and Decker Alligator Chain Size (2026)

Finding the correct black and decker alligator chain size is the most common hurdle for gardeners looking to maintain their loppers. Whether you are clearing brush near your raised beds or pruning back overgrown hedges, having a sharp, correctly sized chain is essential for efficiency.

I have evaluated the listed specifications for various replacement chains to help you match your specific Alligator Lopper model. My top picks, the 6 Inch Chainsaw Chain Replacement and the Oregon Replacement Chain, remain consistent favorites for their compatibility with standard 20V models.

When selecting a chain, it is vital to verify your tool's guide bar length. Using the wrong black and decker alligator chain size can lead to poor cutting performance or, worse, safety risks during operation.

Quick Picks for Best Black and Decker Alligator Chain Size

	Best Overall	6 Inch Chainsaw Chain for Craftsman	Bar Length: 6 Inch	Compatibility: Multi-brand	Pack Quantity: 1 Pack	View Latest Price	Read Review
	Best Budget	Oregon Replacement Chain for Black & Decker	Bar Length: 6 Inch	Compatibility: LP1000/NLP1800	Pack Quantity: 1 Pack	View Latest Price	Read Review
	Best Premium	Black & Decker CCS818 OEM Replacement	Bar Length: 8 Inch	Compatibility: CCS818	Pack Quantity: 2 Pack	View Latest Price	Read Review
	Best Compact	12 Inch Chain for LCS1240	Bar Length: 12 Inch	Compatibility: LCS1240/CMCCS620	Pack Quantity: 2 Pack	View Latest Price	Read Review
	Best Brushless	A42 6 Inch Chain for B&D	Bar Length: 6 Inch	Compatibility: LLP120/WG307	Pack Quantity: 3 Pack	View Latest Price	Read Review

Selecting the correct chain for your Alligator Lopper ensures that your pruning workflow remains efficient while preventing damage to your garden structures and surrounding irrigation lines.

How We Compared Best Black and Decker Alligator Chain Size

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 Size (2026)

1. 6 Inch Chainsaw Chain for Craftsman

   
   
   
   Versatile fit
   View Latest Price
   • Bar Length6 inch
   • MaterialSteel
   • PitchNot listed
   • Best forStandard loppers
   • StandoutWide compatibility

   This chain stands out for its broad compatibility across multiple tool brands, including the Black & Decker 20V LLP12.

   It is ideal for gardeners who own a mix of equipment and need a reliable, standard-sized replacement for routine pruning.

   Based on the specs, this unit fits the 6-inch guide bar configuration found on many popular cordless loppers.

   The trade-off is that it only comes as a single unit, so you will need to purchase multiple if you perform heavy-duty clearing.

2. Oregon Replacement Chain for Black & Decker

   
   
   
   Budget friendly
   View Latest Price
   • Bar Length6 inch
   • MaterialSteel
   • PitchNot listed
   • Best forLP1000 models
   • StandoutBrand reliability

   This Oregon chain is a go-to for owners of the older LP1000 and NLP1800 Alligator Lopper series.

   It is designed for home gardeners who prioritize brand-name consistency for their maintenance parts.

   I evaluated the specs and confirmed this is specifically engineered for the 6-inch bar requirement of those older units.

   One compromise is the lack of detailed technical specifications regarding pitch and gauge, which requires checking your manual.

3. Black & Decker CCS818 OEM Replacement

   
   
   
   Premium quality
   View Latest Price
   • Bar Length8 inch
   • MaterialSteel
   • PitchNot listed
   • Best forCCS818 models
   • StandoutTwo-pack value

   This OEM replacement is the correct choice if you are running the 8-inch CCS818 chainsaw model.

   It is perfect for gardeners who want to ensure their tool operates exactly as the manufacturer intended.

   The two-pack configuration offers better value for those who maintain large garden areas and need a backup on hand.

   The main trade-off is that this specific size is not compatible with the more common 6-inch Alligator Lopper tools.

4. 12 Inch Chain for LCS1240

   
   
   
   Compact reach
   View Latest Price
   • Bar Length12 inch
   • MaterialSteel
   • PitchNot listed
   • Best forLCS1240 models
   • StandoutLonger reach

   Designed for the larger LCS1240 series, this 12-inch chain provides the extra reach needed for thicker branches.

   This is best suited for gardeners dealing with mature trees or larger woody debris that standard loppers cannot handle.

   The set includes two chains, which is helpful for keeping a sharp edge available while one chain is being sharpened.

   Because this is a 12-inch chain, it is significantly heavier and not suitable for the smaller 6-inch Alligator Lopper tools.

5. A42 6 Inch Chain for B&D

   
   
   
   Bulk efficiency
   View Latest Price
   • Bar Length6 inch
   • MaterialSteel
   • PitchNot listed
   • Best forLLP120/WG307
   • StandoutThree-pack bundle

   This three-pack of 6-inch chains is an excellent choice for high-volume users who go through chains quickly.

   It fits the popular LLP120 Alligator Lopper and several Worx Jawsaw models, making it a versatile bulk option.

   I evaluated the fitment data, and it is a solid match for standard 6-inch maintenance tasks in the garden.

   The trade-off is that storing three chains requires organized tool management to ensure they do not dull while sitting in your shed.

What to Look for in Best Black and Decker Alligator Chain Size

Verify Bar Length Compatibility

When searching for a black and decker alligator chain size, the primary factor is matching the bar length precisely to your model. Most Alligator Loppers utilize a 6-inch bar, but using an incorrect size can lead to chain derailment or motor strain. Always verify your specific model number, such as the CCS818, against the manufacturer's specifications. A mismatch here is not just a performance issue; it is a safety hazard that can cause the chain to snap during operation. When you are trimming branches near raised-bed layouts, a loose or incorrectly sized chain increases the risk of jagged cuts, which can introduce pathogens into your woody perennials. Ensure the chain pitch and gauge match the drive sprocket perfectly for smooth, vibration-free cutting that protects your tools and your garden health.

Drive Link Count Importance

The drive link count is the most critical technical specification often overlooked by casual gardeners. Even if two chains are labeled for a 6-inch bar, they may have a different number of drive links, rendering them incompatible. You must count the teeth on the bottom of your old chain or consult the manual to ensure the new chain seats correctly in the drive sprocket. If the link count is too high, the chain will be too loose even with maximum tensioning; if too low, it will not fit over the bar at all. This precision is vital when you are working in tight spaces near irrigation tubing, as a properly tensioned chain provides clean, controlled cuts that prevent accidental damage to your essential water delivery systems.

Chain Pitch and Gauge

Understanding the chain pitch and gauge is essential for maintaining the longevity of your Black and Decker equipment. The pitch is the distance between any three consecutive rivets divided by two, while the gauge is the thickness of the drive link. For Alligator Loppers, these measurements are usually proprietary or highly specific. Using a chain with the wrong gauge will cause it to bind within the bar groove, leading to overheating of the motor and premature wear on the sprocket. When maintaining your small-space growing areas, you need a tool that operates smoothly without excessive friction. A correctly matched pitch and gauge ensure that the chain glides through wood with minimal resistance, preserving battery life and reducing the physical strain on your hands and wrists during long pruning sessions.

Material and Steel Quality

The durability of the steel used in your replacement chain determines how often you need to sharpen it. Look for chains manufactured from high-grade, heat-treated alloy steel, which offers better resistance to stretching and dulling. In a practical garden setting, chains often come into contact with dirt, grit, or even small stones near the soil surface, which can dull a standard chain almost instantly. High-quality chains feature chrome-plated cutters that maintain their edge longer, even when faced with abrasive conditions. By investing in superior steel quality, you reduce the frequency of maintenance stops, allowing you to focus on your irrigation workflow and layout adjustments without constantly needing to pull out the sharpening file to address a dull or smoking chain.

Safety Features and Kickback

Prioritize chains with low-kickback design features to ensure your safety while working in confined garden spaces. Kickback occurs when the nose of the bar strikes an object, causing the saw to jump back toward the operator. Because Alligator Loppers are often used to clear dense brush or trim low-hanging branches near delicate raised beds, the risk of accidental contact is higher. A chain designed with safety bumpers or specialized depth gauges helps mitigate this risk by preventing the cutters from biting too deeply into the wood at once. Always check that the replacement chain meets safety standards compatible with the original equipment manufacturer's specifications to ensure that the integrated safety systems of your lopper continue to function as intended during your daily garden maintenance.

Ease of Installation

The ease of installation is a significant factor for gardeners who prefer to handle their own equipment maintenance. A good replacement chain should come with clear instructions or be designed for a tool-free or simple-tool tensioning system. When you are busy with seasonal pruning, you do not want to spend an hour struggling to seat a chain properly. Look for chains that offer consistent manufacturing quality, as burrs or slight misalignments can make the installation process frustrating and dangerous. A well-manufactured chain will seat into the bar groove effortlessly, allowing you to achieve the perfect tension quickly. This efficiency is crucial for maintaining a productive workflow, ensuring that your garden tools are always ready for action when you need to address overgrown vegetation or clear paths for new irrigation lines.

Compatibility with OEM Standards

Always favor OEM-compatible replacement chains that explicitly state they are designed for your specific Black and Decker model. While generic chains might appear similar, they often lack the precise tolerances required for the unique clamping mechanism of the Alligator Lopper. Using non-compatible chains can lead to excessive vibration, which can damage the internal gears of the tool over time. Furthermore, OEM-compatible options are tested to ensure they work seamlessly with the specific bar and sprocket design of your lopper. By sticking to verified compatible sizes, you protect your investment in your garden equipment and ensure that your pruning tasks remain safe, efficient, and precise, allowing you to maintain your raised beds and small-space gardens with professional-grade results every single season.

Frequently Asked Questions

How do I determine the exact black and decker alligator chain size for my specific model?

To determine the correct chain, first locate the model number on the sticker of your Alligator Lopper, usually found on the handle or near the battery compartment. Once you have the model, check the owner's manual or the manufacturer's website for the specific bar length and drive link count. You can also count the drive links on your existing chain; this is the most foolproof method. Never rely solely on the bar length, as different models may use the same bar length but require a different number of drive links, which would prevent the chain from fitting or tensioning correctly.

Can I use a generic chain if I cannot find the specific black and decker alligator chain size?

It is highly discouraged to use a generic chain if it does not explicitly list compatibility with your exact model number. Generic chains may have different pitches or gauges that can cause the chain to bind in the bar groove or slip off the sprocket entirely. This not only damages the tool's motor and internal gears but also poses a significant safety risk during operation. Always prioritize chains that specify compatibility with your Black and Decker model to ensure the tool operates as designed, protecting both the equipment and the user during routine garden maintenance tasks.

How often should I replace the chain on my Alligator Lopper?

The frequency of replacement depends on how often you use the tool and the type of material you are cutting. If you are pruning woody shrubs near your raised beds, you may encounter dirt or grit that dulls the chain faster. Generally, if you notice the saw pulling to one side, producing fine sawdust instead of wood chips, or if you have to apply extra pressure to make a cut, it is time to sharpen or replace the chain. A well-maintained chain should last through several seasons of light to moderate home garden pruning before needing a full replacement.

Does the black and decker alligator chain size affect battery life?

Yes, an incorrectly sized or dull chain can significantly reduce your battery life. When a chain is the wrong size, it creates excessive friction against the bar groove or fails to cut efficiently, forcing the motor to work harder and draw more current from the battery. A sharp, properly sized chain glides through wood with minimal resistance, allowing the motor to run at its optimal efficiency. If you notice your battery draining much faster than usual, inspect your chain for proper tension, sharpness, and correct sizing to ensure your tool is performing at its best.

Is it possible to sharpen a black and decker alligator chain?

Yes, you can sharpen the chain on your Alligator Lopper using a round file of the correct diameter, typically 5/32 inch for most 6-inch models. However, sharpening requires precision to ensure each cutter is filed to the same angle and length. If the cutters are uneven, the chain will cut crookedly and put uneven stress on the bar. If you are not confident in your sharpening skills, it is often more cost-effective and safer to replace the chain, especially since replacement chains for these models are relatively affordable and ensure factory-level cutting performance.

What happens if the chain is too loose on the bar?

A loose chain is a major safety hazard and can lead to immediate damage to your tool. If the chain is too loose, it can jump out of the bar groove while spinning, which can damage the plastic housing of the lopper or cause injury to the operator. Additionally, a loose chain will not cut effectively, leading to ragged cuts that can damage the health of your plants. Always check the tension before every use, ensuring the chain is snug against the bar but can still be pulled slightly away from the bar with a gloved hand.

How does chain size impact my irrigation workflow?

Using the correct chain size allows for clean, precise cuts, which is vital when working near irrigation lines. If your chain is dull or the wrong size, you may experience 'chatter' or vibration that makes it difficult to control the saw, increasing the risk of accidentally hitting and severing your irrigation tubing. A properly sized and sharp chain allows you to make quick, surgical cuts in tight spaces, ensuring you can prune back overgrowth without disturbing your carefully laid-out irrigation system or damaging the soil structure around your plants, keeping your garden workflow smooth and efficient.

Are there different chain sizes for different types of wood?

While the physical size (pitch, gauge, and link count) must always match your specific tool, the type of cutter can vary. Some chains are designed specifically for aggressive cutting, while others are better for smooth pruning. However, for the Black and Decker Alligator Lopper, you are generally limited to the OEM-specified chain type. Trying to use a 'heavy-duty' chain meant for a different saw will likely result in incompatibility. Stick to the manufacturer-recommended chain specifications, as these are optimized for the torque and speed of the Alligator Lopper's motor, regardless of the wood type you are pruning.

Why does my chain keep coming off the bar?

A chain that frequently comes off the bar is usually a sign of incorrect tension, a worn-out drive sprocket, or the wrong chain size. First, check your tension; if it is too loose, the chain will derail. If the tension is correct, inspect the drive sprocket for wear; if the teeth are hooked or worn, they cannot properly drive the chain, causing it to slip. Finally, ensure you are using the correct chain size for your model. If you have ruled out these factors, the bar itself may be damaged or spread, requiring a full replacement of the bar and chain combo.

How do I store my Alligator Lopper to protect the chain?

To protect your chain during storage, always clean the bar and chain of sap and debris after every use. A buildup of sap can cause the chain to rust and seize up over time. It is also a good practice to apply a light coating of bar oil to the chain before storing the tool in a dry, cool place. Never store the tool in an area with high humidity or near chemicals, as this can accelerate corrosion. Keeping the chain clean and lightly oiled ensures that it remains sharp and ready for your next pruning session in the garden.