Stihl Micro vs. Super Saw Chain (Cut Specs)
STIHL Micro chains use semi-chisel cutters; Super chains use full-chisel cutters. Micro is generally more forgiving in dirty wood, while Super can cut clean wood faster when sharp. Neither name tells you whether a chain fits your saw. Match pitch, gauge, and drive-link count to the bar and sprocket, then use that chain’s sharpening specifications.
What Micro and Super mean
Micro and Super describe cutter shape, not chain size. A cutter is the part of the chain that removes wood. STIHL uses Micro for semi-chisel designs and Super for full-chisel designs, but neither name alone identifies pitch, gauge, drive-link count, file size, or fit.
A semi-chisel cutter has a more rounded working corner. It tends to keep cutting better if it meets some dirt, and it can be more forgiving to sharpen. A full-chisel cutter has a more square corner. In clean wood, a sharp full-chisel chain can cut faster, but its corner is less tolerant of grit and damage.
Those are general differences, not a promise about cutting speed. Chain model, sharpness, wood, saw power, and maintenance all affect results. A dull Super chain can cut poorly; a sharp Micro chain can work very well.
| Feature | Micro, semi-chisel | Super, full-chisel |
|---|---|---|
| Cutter corner | Rounded | Square |
| Common advantage | More tolerant of some dirt and less exact filing | Can cut clean wood quickly when sharp |
| Common trade-off | May cut more slowly than a comparable sharp full-chisel chain | More easily affected by grit or damaged cutters |
| Fit information provided by the name | None | None |
In muddy, sandy, or bark-covered wood, either chain can dull quickly. In clean firewood, the Super profile may be a good choice if you can keep it sharp. The wood and the condition of the chain matter more than the label alone.
Check fit before choosing a chain
A chain fits only when its dimensions match the bar and drive sprocket. Pitch, gauge, and drive-link count are the key checks. Bar length and chain profile do not replace them. Read the markings on the bar and saw, then confirm the exact chain part number in the STIHL chain chart or manual.
Pitch is the spacing between the chain’s drive links, expressed as a fraction of an inch or in millimeters. Gauge is the thickness of the drive links that sit in the bar groove. Drive-link count is the number of links that run around the bar. All three must match the bar and sprocket.
Do not treat a common size as a Micro or Super specification. For example, 3/8-inch low-profile pitch and .050-inch gauge are dimensions, not cutter-profile names. Two chains can share a pitch and gauge but differ in drive-link count or cutter design.
| Check | Where to confirm it | What must match |
|---|---|---|
| Pitch | Bar marking, saw manual, STIHL chart | Bar groove chain and drive sprocket |
| Gauge | Bar marking and chain chart | Bar groove |
| Drive-link count | Existing chain or chain chart | Bar length and setup |
| Chain part number | STIHL chart or dealer | Exact saw and bar combination |
| Bar length | Saw manual | Approved range for that saw |
Bar length must stay within the range approved for your saw. There is no reliable universal rule that selects bar length from engine displacement alone. If the markings are worn or unclear, identify the saw model and bar before buying a chain. Do not guess from the old chain if it may have been installed incorrectly.
Sharpening: use the chain’s own specifications
The right file and filing angle depend on the exact chain model. Micro and Super do not each have one universal file size or angle. Check the chain number against STIHL’s filing chart or the saw and chain manuals before sharpening; use the listed file diameter, angle, and cutter-length guidance.
A file diameter is the size of the round file that fits the cutter’s gullet, the curved area behind its cutting edge. A filing angle is the angle used across the cutter’s top plate. These settings affect how the chain cuts, so do not choose them by appearance or by copying a different chain.
STIHL has used different chain families and cutter variations. A file that works for one pitch or model may be wrong for another, even if both chains are labeled Micro or both are labeled Super. If the exact chain number is missing, pause and identify the chain before filing. STIHL dealer staff can help match the markings to a filing chart.
When the correct specifications are in hand:
- Secure the saw and engage the chain brake while setting up, following the manual.
- Use the specified round file and a guide that helps hold the listed angle.
- File each cutter with consistent strokes, keeping left- and right-hand cutters as even as possible.
- Check cutter length and depth gauges using the chain maker’s gauge and instructions.
- Replace a chain with cracked, badly damaged, or service-limit-worn parts; do not file damage away by guesswork.
A depth gauge, also called a raker, controls how much wood a cutter can take. Set it to the chain maker’s specification with the correct tool. There is no one clearance for every Micro or Super chain. Lowering a depth gauge too far can make the chain cut aggressively and increase kickback risk.
Fitment examples from the garage
These examples show how to compare choices, not what chain fits a particular saw. I use this check when someone brings in a chain marked “Micro” or “Super” but cannot tell whether it belongs on the bar. The chain profile is only one part of the answer.
Example 1: A clean firewood setup. The owner wants a faster-feeling cut in clean, prepared wood. If STIHL’s chart lists a compatible Super chain for the saw and bar, it may suit that work. The owner still has to match pitch, gauge, and drive-link count and sharpen to the Super chain’s own instructions.
Example 2: A chain used around dirty bark or ground contact. A compatible Micro chain may be a practical choice because its semi-chisel profile is generally more tolerant of some contamination. It is not dirt-proof. Avoid cutting into soil, and sharpen or replace the chain when it no longer cuts cleanly.
| Situation | Profile to consider | Checks that still decide fit |
|---|---|---|
| Clean wood; operator can maintain a sharp edge | Super | Part number, pitch, gauge, drive-link count, approved bar |
| Wood may have dirt on bark; frequent touch-up sharpening | Micro | Part number, pitch, gauge, drive-link count, approved bar |
| Chain identity or bar markings unclear | Neither until identified | Saw model, bar markings, STIHL chart |
| Existing chain is damaged or worn | Do not choose by profile | Inspect chain and replace with a listed match |
These are selection scenarios, not field test results. Actual cutting performance depends on the chain model, wood, saw condition, and sharpness. Never fit a chain just because it appears to sit in the bar groove.
Before cutting: oil, tension, and safety
A correctly matched chain still needs proper setup. Inspect the chain brake, chain catcher, throttle lockout, bar rails, and chain before starting. Check tension using the saw manual’s method, and confirm that the chain can move as specified. Wear task-appropriate protective equipment and keep bystanders outside the work area.
Use bar-and-chain oil and verify that oil reaches the chain before cutting, using the manual’s check. Oil type and pump output vary by saw and temperature, so there is no universal flow-rate target. If oil delivery is absent or unclear, stop and troubleshoot rather than cutting dry.
Keep the bar nose away from wood and other objects. Contact at the upper part of the guide-bar nose can cause rotational kickback, which can throw the bar up and back toward the operator. A Super chain’s potential speed does not make nose contact safer. Keep a firm two-handed grip and do not disable the chain brake.
For felling, large trees, or unstable wood, use trained personnel and suitable methods rather than improvised cuts. Follow the saw manual and applicable work rules, including relevant ANSI Z133 guidance and OSHA requirements where they apply.
Fuel, maintenance, and storage
Fuel mix and engine settings are set by the saw, not by the chain profile. Use the ratio specified in the saw manual, along with the correct fuel and oil. Do not infer a fuel ratio, idle speed, or maximum engine speed from the words Micro or Super.
Before heading out, clean the bar groove and oil holes, then inspect the rails, sprocket, drive links, and cutters. Replace parts that are damaged or beyond STIHL’s service limits. After use, clean and store the saw, bar, and chain dry and secure, following the manual’s fuel-storage instructions.
When returning the saw to service, recheck chain condition, tension, brake operation, and oil delivery. A chain that is sharp but poorly tensioned, damaged, or not getting oil is not ready to cut.
Quick answers
Micro and Super are cutter-profile labels, not complete chain specifications. Use the saw and bar markings, then confirm the chain part number and filing details in STIHL’s chart or manual. The questions below cover the checks that matter when you are choosing or sharpening one.
Is STIHL Micro semi-chisel or full-chisel?
Micro refers to a semi-chisel cutter profile.
Is STIHL Super semi-chisel or full-chisel?
Super refers to a full-chisel cutter profile.
Which chain cuts faster?
A sharp Super chain can cut clean wood faster than a comparable Micro chain, but actual results depend on chain model, wood, saw, and condition.
Which chain handles dirt better?
Micro is generally more tolerant of some dirt than Super. Neither chain should be run through soil or treated as dirt-proof.
Does Micro or Super tell me what file size to use?
No. Identify the exact chain model and use its STIHL filing chart for file diameter and filing angle.
Do all Micro chains use the same filing angle?
No. Follow the instructions for the exact chain model. Do not assume one angle fits every Micro chain.
Can I install a Super chain if the pitch matches?
Not on pitch alone. Gauge and drive-link count must also match the bar, and the chain must be approved for the saw and sprocket setup.
Does chain type change my fuel mix?
No. Fuel mix is specified for the saw model in its manual, not for Micro or Super chain.
Can I lower the depth gauges to make either chain cut faster?
Do not lower them by guesswork. Set them with the correct gauge tool to the chain maker’s specification; excessive lowering can increase kickback risk.
What should I do if the chain or bar markings are unreadable?
Do not guess. Identify the saw and bar from their model information, then confirm the correct chain with STIHL’s chart or a dealer.
(This article was written by one of our staff writers, David Hensley. Visit our Meet the Team page.)
