Hedge Trimmer Blade Length, Tooth Spacing and Cutting Capacity: What Buyers Should Compare

Blade length, tooth spacing and cutting capacity are three separate specifications that answer different questions. Blade length determines how much hedge a single pass can cover and directly affects tool weight, balance and packaging size. Tooth spacing describes the gap between adjacent cutting teeth — it hints at the size of branches the blade can engage, but it is not a guarantee of cutting diameter. Cutting capacity is a manufacturer’s stated maximum cutting diameter, and it is a claim that must be verified against actual sample performance, not a tested result you can take at face value. Understanding how these three relate — and where each one stops being useful — is what separates a clear RFQ from a spec sheet that looks complete but tells you nothing actionable.

Illustrative scenario: Three suppliers send quotes, each listing “blade length 550 mm.” When the samples arrive, one has a cutting length of 480 mm with a 70 mm non-cutting section — total 550 mm. Another lists 550 mm as the overall blade bar length, but the effective cutting teeth start 40 mm from the housing. Only the third supplier’s 550 mm refers to the actual cutting length. Same number, three meanings. The buyer who compared quotes by blade length alone was comparing apples, oranges and something in between.

Blade Length: What It Changes

Blade length is the most visible specification on a hedge trimmer, and it is the one most buyers fixate on first. But blade length is not simply “longer is better.” It changes several things at once.

Coverage and reach. A longer blade covers more hedge surface in a single stroke. For a landscaper maintaining a long hedge line, that means fewer passes and faster completion. For a homeowner with a small shrub, a long blade is awkward — it cannot maneuver inside a tight bush without damaging branches the operator did not intend to cut.

Weight and balance. A longer blade shifts the center of gravity forward. On a pole hedge trimmer, this effect is amplified because the blade sits at the end of a long shaft. A blade that is 60 cm long on a pole trimmer creates more leverage fatigue than the same blade on a handheld unit. Weight distribution affects how long an operator can work before fatigue sets in — and fatigue is a safety concern, not just a comfort one.

Packaging and shipping. Overall blade length directly determines carton dimensions. A hedge trimmer with a 75 cm blade ships in a longer carton than one with a 45 cm blade. For e-commerce channels where shipping cost is calculated by volumetric weight, this matters. For retail shelves where display space is limited, it matters differently.

One distinction worth noting: some manufacturers distinguish between cutting length (the effective portion of the blade that actually cuts) and overall blade length (the total length of the blade bar, including the non-cutting section near the housing). When comparing suppliers, confirm which figure each one is quoting. A “550 mm blade” from one supplier and a “550 mm cutting length” from another are not the same specification.

Tooth Spacing: What It Tells a Buyer

Tooth spacing is the distance between the tips of adjacent cutting teeth, measured in millimeters. It is a structural dimension — not a performance rating.

Here is what tooth spacing actually tells you: tooth geometry affects what can enter the blade gap, but tooth spacing is not a direct maximum branch-diameter rating. A blade with 15 mm tooth spacing may allow branches up to roughly that diameter to enter between its teeth. But “can enter” is not the same as “can cut cleanly.”

Why tooth spacing is not a cutting guarantee:

• Branch hardness varies. A 12 mm green branch cuts differently from a 12 mm dry, woody branch. Tooth spacing does not account for material hardness.
• Blade sharpness and edge geometry matter. Two blades with identical tooth spacing can perform very differently if one has a precision-ground edge and the other has a stamped edge.
• Stroke rate and power affect the result. A blade that engages a branch but lacks the stroke speed or motor power to cut through it will jam, not cut.
• The manufacturer’s safety instructions may state a different limit. Many manuals include a warning such as “do not cut branches exceeding X mm in diameter” — and that limit may be lower than the tooth spacing would imply.

The practical takeaway for buyers: tooth spacing is a useful filter when comparing blades, but it should never be the sole basis for a cutting-diameter claim in your product listing or customer communication. A buyer who sees “tooth spacing 34 mm” on a spec sheet and tells their customer “this trimmer cuts 34 mm branches” is setting up a return. In sample testing, a 12 mm dry hardwood branch may jam the blade — because tooth spacing describes what fits between the teeth, not what the blade can actually sever.

Cutting Capacity: The Claim That Must Be Verified

Cutting capacity is where most sourcing confusion happens. Here is why.

The term “cutting capacity” is not standardized across the industry. Different suppliers use it to mean different things:

• Some define it as the maximum branch diameter the blade can cut in a single pass under ideal conditions.
• Others define it as the maximum branch width (which is not the same as diameter if the branch is oval or irregular).
• Some suppliers do not list a cutting capacity figure at all — they only provide blade length and tooth spacing, leaving the buyer to infer cutting ability.

More importantly, cutting capacity is often manufacturer-stated unless a test method or report is provided. The conditions under which the manufacturer achieved that figure — branch species, moisture content, blade sharpness, stroke rate — are rarely disclosed. This means two suppliers listing “cutting capacity 28 mm” may have arrived at that number under completely different conditions.

What this means for buyers:

1. Treat the cutting capacity figure as a starting point, not a verified specification.
2. During sample evaluation, test the trimmer against branches of known diameter, species and condition. Record what it cuts cleanly and what it struggles with.
3. If you plan to make a cutting-capacity claim in your product listing, base it on your own sample test results — not on the supplier’s spec sheet.

Note: Cutting capacity must be verified during sample evaluation. Test against branches of known diameter and species, and record the results as “sample-tested” figures — separate from the supplier’s stated claim.

How the Three Specifications Work Together

These three parameters interact. A blade that is long, with wide tooth spacing and a high cutting-capacity claim, sounds impressive on paper — but it may be heavy, imprecise for detailed work, and backed by a capacity figure that does not hold up in the field. A shorter blade with tighter tooth spacing may be more maneuverable and precise, but it limits the branch size the tool can handle.

The table below summarizes what each specification actually controls and what it does not tell you.

Understanding these relationships helps you ask better questions when evaluating suppliers. A supplier that lists a 60 cm blade with 34 mm tooth spacing and a “cutting capacity 30 mm” is giving you three numbers that should be cross-checked — not accepted as a package.

What to Measure on a Sample

When a sample arrives, the specification sheet is only the beginning. The physical sample is where you verify whether the numbers hold up.

Sample Measurement Checklist — Hedge Trimmer Blade Specifications:

Note: Document blade measurements with photos during sample evaluation — ruler on blade for length, close-up of tooth spacing, feeler gauge in blade gap. These photos become your visual baseline for bulk comparison.

What to Put in an RFQ

A well-structured RFQ for hedge trimmers should include these blade-related fields. This is not a template with fixed numbers — it is a checklist of questions every buyer should answer before requesting quotes.

RFQ Blade Specification Fields:

• Blade length (specify whether you need overall length or cutting length)
• Tooth spacing (mm)
• Cutting capacity (mm) — ask supplier to define: maximum branch diameter? Maximum branch width? Under what conditions?
• No-load stroke rate (SPM or cut/min)
• Blade material and edge type (stamped, ground, dual-ground, laser-cut)
• Whether blade is single-sided or double-sided
• Blade tip configuration (pointed, rounded, safety-tipped)
• Available blade guard/scabbard for transport and storage
• Replacement blade availability and part number
• Whether the blade is field-replaceable or requires factory service

The goal of this field list is not to fill in numbers before you talk to a supplier. It is to make sure that when quotes come back, you are comparing the same things — not just looking at three different spec sheets that use the same words to mean different things.

Next Step: Define Your User and Application First

Before comparing blade lengths and tooth spacings across suppliers, define what your target customer actually does with the tool. A homeowner maintaining shrubs needs a different blade than a landscaper trimming a 3-meter hedge row. A garden center stocking trimmers for casual users should not carry the same blade profile as a landscaping supply company serving professional crews.

Once you know the user and the application, the three specifications become filters — not a shopping list. Blade length narrows by reach and weight requirements. Tooth spacing narrows by the typical branch size in the target use case. Cutting capacity becomes a claim to verify during sampling, not a number to print on a box.

If you are building a hedge trimmer range and want help comparing blade specifications across suppliers, send us your target market, user profile and typical hedge conditions. We will help you translate spec sheet numbers into comparable specifications and arrange sample evaluation.

Research Sources Used:

1. Made-in-China: Cordless Hedge Trimmer (CDHT004) product specification page — blade length, tooth spacing, cutting capacity, SPM expression
2. Husqvarna 522HS75S official product specification page — cutter bar length, stroke rate, cutting teeth description
3. Alibaba: Gasoline Hedge Trimmer product page — blade specification expression