What Are The Parts Of A Chainsaw Chain: Key Components

Cutters, depth gauges, drive links, tie straps, rivets, and guard links form a chainsaw chain.

If you want smooth cuts and fewer kickbacks, you must know what are the parts of a chainsaw chain. I have sharpened and rebuilt many chains in the field and shop. This guide shows what each part does, how they work together, and how to tune them for peak performance.

What are the parts of a chainsaw chain?

When people ask what are the parts of a chainsaw chain, they expect a clear map. A modern chain is a loop of steel links that ride the bar and drive sprocket. The main parts are:

Cutters. The sharp teeth that slice fibers.
Depth gauges or rakers. The small humps that set bite depth.
Drive links. The inner tangs that fit the bar groove and sprocket.
Tie straps. The flat plates that connect links.
Rivets. The pins that hold links together.
Guard or bumper links. Safety features that help reduce kickback.
Left-hand and right-hand cutter sequence. The alternating layout that balances cuts.

To answer what are the parts of a chainsaw chain in practice, you also need to know pitch, gauge, and cutter style. These specs decide what fits your saw and how it will cut.

Cutter components explained

Cutters do the cutting. Each cutter has small shapes that matter a lot.

Top plate. The flat top that forms the cutting edge.
Side plate. The vertical face that meets the top plate at a sharp corner.
Working corner. The point where top and side meet. It does the most cutting.
Gullet. The curved area under the top plate that carries chips out.
Depth gauge or raker. The hump in front of the cutter that sets how deep the cutter bites each pass.
Witness mark. A stamped line that shows the correct filing angle.
Chrome layer. A hard coating on the edge for wear resistance.

Filing angles set how these parts perform. Most chains like a 25–35 degree top-plate filing angle. The depth gauge setting is often about 0.025 inch, but always follow your chain’s spec. Lower rakers cut faster but raise vibration and kickback risk.

If you want a sharp, safe chain, learn these details when asking what are the parts of a chainsaw chain. A few minutes with a file can change how your saw feels all day.

Drive links, tie straps, and rivets

The lower half of the chain keeps it on track and moves power.

Drive links. These inner tangs sit in the bar groove. They match the bar gauge. They also carry oil through small channels.
Tie straps. Flat outer plates that join cutters and drive links. They also help set chain stiffness.
Rivets. Hardened pins that hold links together. Proper peening and hardness prevent stretch and failure.

This set is the backbone. When folks ask what are the parts of a chainsaw chain beyond teeth, these are the pieces that keep the loop running straight and oiled.

Chain geometry and sizing: pitch, gauge, and sequence

The chain’s size and layout decide fit and cut behavior.

Pitch. Half the distance over three rivets. Common sizes are 1/4, 3/8 low profile, 0.325, 3/8, and 0.404 inch.
Gauge. Thickness of the drive link. Common gauges are 0.043, 0.050, 0.058, and 0.063 inch. It must match the bar groove.
Cutter profile. Full chisel has a sharp square corner for speed in clean wood. Semi-chisel has a rounded corner for better edge life in dirty wood. Low-profile chains are lighter and common on small saws.
Sequence. Full-complement has more cutters for smooth cuts. Semi-skip and skip have fewer cutters for longer bars and easier chip clearance.

These specs round out what are the parts of a chainsaw chain. They are not visible teeth, but they define how the parts play together.

How the parts work together during a cut

Here is what happens in a fraction of a second.

The depth gauge sets the bite. It limits how deep the working corner enters the wood.
The top and side plates shear fibers. The gullet carries chips away.
Drive links pull the chain. They ride the bar groove and mesh with the sprocket.
Oil flows along the bar and through the drive link paths. It cools and reduces wear.
Guard links help ease the entry and lower kickback risk.

Once you learn what are the parts of a chainsaw chain, this cycle makes sense. Each piece has a job. If one is off, the whole cut suffers.

Maintenance by part: angles, depth, and fit

Good maintenance doubles chain life and keeps you safe.

Sharpening cutters. Use the right round file size for your chain pitch. Match the witness mark angle. Keep strokes even so all cutters have the same length.
Setting depth gauges. Use a depth gauge tool and a flat file. Follow the chain’s spec, often 0.025 inch. Too low makes the saw grab. Too high makes dust, heat, and slow cuts.
Cleaning gullets. Remove packed resin. A clean gullet clears chips and prevents heat.
Checking drive links. Look for shark-fin wear or blueing. Replace the chain if the tangs are thin or burred.
Inspecting rivets and tie straps. Look for loose, peened, or cracked parts. A loose link can fail at speed.
Fit with bar and sprocket. Match pitch and gauge. Replace a worn sprocket when you install a new chain.

From years of sharpening on job sites, my biggest lesson is this: stop as soon as cuts pull to one side. That means one row of cutters is shorter. Even them up at once. Knowing what are the parts of a chainsaw chain helps you fix it fast.

Safety features and special chain types

Safety starts with the chain design.

Low-kickback features. Guard links and bumper drive links reduce the chance of a reactive force at the bar tip.
Narrow-kerf chains. Cut a thinner slot. Great for small saws and battery tools.
Carbide-tipped chains. Stay sharp longer in dirty or frozen wood. Harder to sharpen in the field.
Ripping chains. Have special angles for cutting along the grain. Not ideal for crosscutting.

When you ask what are the parts of a chainsaw chain, include these safety and specialty parts. They change how the saw behaves under stress.

Troubleshooting: read the wear, fix the part

Most cut problems point to a part you can tune.

Crooked cuts. One side’s cutters are shorter or rakers are uneven. File all cutters to the same length and reset rakers.
Excess dust or smoke. Cutters are dull, rakers too high, or oil is low. Sharpen, set rakers, and check oil flow.
Harsh vibration. Rakers too low or uneven. Bring them back to spec with a depth gauge tool.
Chain stretch. Rivet wear or running too loose. Replace the chain if stretch repeats after tensioning.
Bar burns and blue drive links. Poor oil flow or pinched rails. Clean the oiler hole, flip the bar, and dress the rails.

My rule in the field is simple. If I see dust, I stop and sharpen. If I see chips, I keep cutting. This simple check saves time and keeps the chain parts alive.

Frequently Asked Questions of what are the parts of a chainsaw chain

What are the parts of a chainsaw chain in one list?

Cutters, depth gauges, drive links, tie straps, rivets, and guard links. These parts alternate left and right cutters to balance the cut.

How do depth gauges affect cutting speed?

Lower depth gauges increase bite and speed but raise kickback and vibration. Keep them at the maker’s spec for safe, steady cuts.

What pitch and gauge should I choose?

Match the bar and sprocket on your saw. Check markings on the bar for pitch and gauge, then buy the same for the chain.

Why does my saw cut to one side?

One side’s cutters are shorter or duller than the other. File all cutters to equal length and reset rakers to the same height.

How often should I sharpen the chain?

Touch up after each tank of fuel or whenever chips turn to dust. Light, frequent filing preserves cutter length and keeps cuts straight.

Are full-chisel cutters better than semi-chisel?

Full-chisel cuts faster in clean softwood but dulls quicker in dirty wood. Semi-chisel holds an edge longer and is more forgiving.

Can I mix chains and bars from different brands?

Yes, if pitch and gauge match and drive link count fits the bar length. Always confirm compatibility with the manufacturer specs.

What causes chain stretch?

Rivet wear, heat, and running too loose. Replace the chain if it will not hold tension after proper break-in and adjustment.

Do guard links reduce performance?

They can slightly slow aggressive cuts but improve stability and safety. For most users, the trade-off is worth it.

What file size do I need?

File size depends on pitch. Common pairs are 5/32 inch for 3/8 low profile, 3/16 inch for 0.325, and 7/32 inch for 3/8 standard.

Conclusion

Once you understand what are the parts of a chainsaw chain, tuning and safety get easier. You can pick the right chain, set depth gauges, file clean angles, and spot wear before it costs you time or money. Use the tips here on your next sharpening session and track the difference in chip size and cut speed.

Ready to go deeper? Subscribe for more field-tested saw tips, ask a question in the comments, or explore our other guides to pick the best chain for your bar and wood.