Chainsaw protection class: what the numbers mean

You find Class 1 on one pair of boots, Class 2 in a specialist description and two different chain speeds in your saw manual. A chainsaw protection class is a chain-speed test category, not a general safety rating. Match the stated class to the right speed for your saw, then confirm that the exact boots or trousers actually carry that claim.

In short

For the boot classes covered here, Class 1 corresponds to 20 metres per second, Class 2 to 24 m/s and Class 3 to 28 m/s. Use the actual rated or maximum chain-speed figure relevant to selection, not a lower nominal figure in isolation, and never fill in a missing class from a product's appearance, price or steel toe.

Three speeds, not three safety scores

The class number tells you the chain speed used for the protective assessment. Class 1 is 20 m/s, Class 2 is 24 m/s and Class 3 is 28 m/s. Class 2 is not twice Class 1, and Class 3 does not mean that a boot is three times as protective.

A higher number reflects a higher chain speed in the class system. It is not a percentage, a quality grade or a guarantee against injury. Calling any item cut-proof would go beyond what the class says. The practical question is whether the stated test-speed class is appropriate for the chain-speed information supplied for your saw.

You may also see Class 0 in clothing guidance. STIHL describes Class 0 as 16 m/s, but it is not a boot option in the EN ISO 17249 tables used for the footwear considered here. A Class 0 reference on clothing does not give you permission to assign that class to boots.

• Class 1: 20 m/s.
• Class 2: 24 m/s.
• Class 3: 28 m/s.

You still need the saw manual and an explicit class on the exact product.

Read the right figure in your manual

A saw can be described with a nominal chain speed and a higher actual rated or maximum figure. Selecting protection from the lower number alone can place the saw in the wrong class.

SIP Protection illustrates the problem with the STIHL MS 211 C. Its example gives a nominal chain speed of 18.6 m/s and a maximum speed of 24.8 m/s. If you looked only at 18.6 m/s, you might stop at the 20 m/s line. The second figure changes the decision because it sits above both 20 m/s and 24 m/s.

That example is not a shortcut for another machine. It does not mean every saw adds the same number of metres per second, and it does not put every home-use model in one class. Where your manual gives two speeds, use the actual rated or maximum figure relevant to selection rather than the smaller nominal value.

A search for "nominal speed plus 33 per cent" is not a substitute for the manual of your exact model. The MS 211 C figures show the distinction. They are not a formula for another saw. If the wording stays unclear, ask the saw manufacturer or a competent dealer which figure applies. Engine size, bar length and the word domestic do not answer the chain-speed question.

What guidance does and does not say

Manufacturer guidance and workplace guidance answer different questions. STIHL recommends Class 1 for home use and general forestry as a compromise that preserves movement. That is useful context, but it is not a finding that every home-use chainsaw runs within the Class 1 test speed. Your model's manual still controls the speed comparison.

The Health and Safety Executive names the relevant protective standard in its chainsaw PPE guidance. The material used here does not show HSE choosing Class 1, Class 2 or Class 3. A claim that HSE requires Class 2 would be false.

STIHL's recommendation treats movement as part of the trade-off, so the largest class number is not an automatic purchase. Match the saw's chain speed to a class the manufacturer actually states. For the first two levels, see Class 1 versus Class 2 chainsaw boots after you have checked the manual.

How to read a silent product listing

An amazon.co.uk title can describe an item as chainsaw footwear without printing Class 1, 2 or 3. Silence is not evidence of a low class, a high class or no certification at all.

The boot set behind our chainsaw boots comparison shows the difference. The SAFETOE listing for ASIN B0BJK5X43D states Class 1, along with leather and a steel toe. The Oregon Sarawak title also states Class 1. By contrast, the Oregon Yukon leather and rubber Amazon titles omit the class, although Oregon's own product pages describe the corresponding leather model as Class 1 and the rubber model as Class 3.

Match the identifier on the boot, box or documentation before you transfer a class from a manufacturer page to an Amazon variation. No retained title in this set states Class 2, which does not prove Class 2 boots are unavailable in the UK. If your manual points towards 24 m/s, shop for an explicit Class 2 statement.

Price does not settle it. Paying more may buy different materials, but only a clear class statement tells you which chain-speed category is claimed. A steel toe is a separate feature, not a substitute for an EN ISO 17249 class.

Boots and trousers need separate checks

The same class language can appear on different types of chainsaw protective clothing, but a statement on one item does not establish the class of another. Boots and trousers should each be checked on their own label, listing and documentation. Buying Class 1 boots does not make unclassified trousers Class 1, and the reverse is equally untrue.

In the trouser listings considered for this hub, only the Protect Pro product with ASIN B0G5NK68PZ names Class 1. Do not assign a class to the other trousers when their product information does not state one.

Keep a simple record while you buy: exact saw model and manual speed, boot model and stated class, trouser model and stated class. That stops one confident claim being copied across the whole kit. For the wider set of items, read what to wear when you use a chainsaw.

Avoid the wrong standard number

For chainsaw protective footwear, the identifier named in the sources used here is EN ISO 17249. The digits matter. EN ISO 19249 is not that footwear standard, so a listing using 19249 should trigger a verification step rather than being accepted as an alternative spelling.

Do not correct the number yourself and then infer a class. Ask for a photograph of the product marking, or for manufacturer documentation that names the exact model and variation you intend to buy.

The same caution applies when a title says only safety boots, steel toe or cut protection. Those phrases may describe genuine features, but they do not supply a chainsaw protection class. The class must be stated, and it must be read as a chain-speed category rather than as a broad promise about the boot. For the difference between ordinary site footwear and chainsaw footwear, read why a steel toe is not chainsaw protection.

A practical buying check

Start with the saw, not the product grid. Write down the exact model, open its manual and locate every chain-speed figure. If nominal and maximum or actual rated speeds are both printed, do not base the class on the lower nominal number alone.

Next, translate the relevant speed into the class table: 20 m/s for Class 1, 24 m/s for Class 2 and 28 m/s for Class 3. If the figure does not fit neatly, do not round it down to make a product qualify. The MS 211 C example shows why: 24.8 m/s is not within a 24 m/s category merely because the difference looks small.

Then verify the exact item. Look for the class and EN ISO 17249, and match any manufacturer page to the variation in front of you. When an Amazon title is silent, leave the class unstated until model-specific evidence resolves it. Repeat that check for trousers. Do not carry a boot class across, and do not treat a steel toe as chainsaw protection.