Attachment weight isn't a footnote in the spec sheet. It's the number that determines how much payload you can actually carry once the attachment is hung, and it's the number that determines whether your trailer's load rating is legal on a provincial highway. Here are real weight ranges for every common category, plus the math that connects them to your machine's ROC.
ROC — Rated Operating Capacity — is measured with a standard general-purpose bucket. That bucket weighs roughly 280–320 lb for a 66–72 inch unit. When you swap to a different attachment, the attachment's weight replaces and often exceeds that baseline. A 900 lb root grapple doesn't just replace the bucket — it costs you 600 lb or more of usable payload compared to running the standard bucket.
Every pound of attachment weight is a pound subtracted from what you can carry, push, or lift. On a mid-size machine like a Bobcat S650 with its 2,690 lb ROC, that arithmetic constrains what you can do with heavy attachments. A 1,400 lb industrial grapple leaves you 1,290 lb of net payload. A 2,200 lb mulcher exceeds the S650's ROC outright — the machine can carry the attachment, but it can't carry anything in it, and working on a slope with that attachment loading is approaching the stability limit.
Transport weight is the other calculation operators skip. When you load a machine on a trailer with an attachment mounted, that attachment weight adds to the gross trailer weight. A 48-foot step-deck at 45,000 lb GVW with a 12,000 lb CTL and 1,800 lb snowblower attached is at 13,800 lb of payload before you add the operator's lunch kit. Provincial weight restrictions — especially during spring road bans in Ontario and the Prairies — make this a compliance issue, not just a logistics question.
| Attachment Type | Configuration / Size | Weight Range (lb) | Notes |
|---|---|---|---|
| General Purpose Bucket | 48 inch | 275–400 | Lighter end: standard steel. Heavier: bolt-on edge, side cutters |
| General Purpose Bucket | 72 inch | 450–700 | Width and wall thickness drive range |
| Rock Bucket | Any width | GP weight + 15–25% | Heavier steel, abrasion-resistant plate, reinforced lip |
| 4-in-1 Combination Bucket | Any width | GP weight + 100–150 | Clamshell jaw mechanism adds weight |
| Pallet Forks (frame + carriage) | Standard duty | 400–650 | Tine length and frame rating are weight drivers |
| Pallet Forks (frame + carriage) | Heavy duty | 700–900 | Larger carriage, heavier tines for 5,000–6,000 lb rated capacity |
| Root Grapple | 60–72 inch | 600–1,100 | Light end: single cylinder, lighter tine gauge. Heavy: dual cylinder, heavy-duty tines |
| Industrial / Demolition Grapple | — | 900–1,500 | Solid steel construction; some exceed 1,500 lb on full-size machines |
| Auger Drive + 12" Bit | — | 300–500 | Drive unit ~250–350 lb; bit adds 50–150 lb depending on length and tooth type |
| Auger Drive + 36" Bit | — | 450–700 | Large-diameter bits are heavy; 48" bits can push 800+ lb total |
| Snowblower | 72 inch | 800–1,400 | Single-stage light end; two-stage heavy end |
| Snowblower | 84–96 inch | 1,400–1,800 | Heaviest common attachment in the field |
| Hydraulic Breaker | Light class (200–350 lb rated) | 350–500 | Includes mounting bracket |
| Hydraulic Breaker | Medium / Heavy class | 600–1,000 | Heavy end for full-size skid steer class breakers |
| Mulcher / Forestry Cutter | 60 inch | 1,200–1,800 | Drum, hood, and hydraulic motor all heavy |
| Mulcher / Forestry Cutter | 72–84 inch | 1,800–2,800 | Often exceeds ROC of machines under 3,500 lb ROC |
| Trencher (chain) | Compact | 600–800 | Drive unit + boom + chain assembly |
| Trencher (chain) | Full-depth (48–60") | 800–1,100 | Longer boom and heavier drive increase weight |
| Cold Planer | 18–24 inch | 1,200–1,800 | Drum, cutter teeth, and side plates are dense |
| Cold Planer | 36–48 inch | 1,800–2,500 | Full-width planers for asphalt work |
| Pickup Sweeper (with hopper) | 60 inch | 700–1,000 | Empty hopper weight; full hopper adds 200–600 lb of debris |
| Pickup Sweeper (with hopper) | 72–84 inch | 900–1,200 | Hopper capacity and frame construction drive range |
Usable payload = ROC minus the attachment weight above the standard bucket baseline. The standard bucket baseline is roughly 300 lb for most machines' ROC calculation. So the formula in practice is:
Usable payload = ROC − (attachment weight − 300 lb)
Or more simply for most planning purposes: Usable payload ≈ ROC − attachment weight + 300
Worked examples using common Canadian jobs:
| Machine | ROC (lb) | Attachment | Attachment Wt (lb) | Usable Payload (lb) | Practical Meaning |
|---|---|---|---|---|---|
| Bobcat S650 | 2,690 | Root grapple (standard) | 900 | ~2,090 | Comfortable for brush and logs under 1,800 lb |
| Bobcat S650 | 2,690 | Industrial grapple | 1,300 | ~1,690 | Green lumber loads borderline — keep boom low |
| Kubota SVL95-2s | 3,197 | 72" snowblower | 1,100 | ~2,397 | Snowblower is pushing, not lifting — ROC less critical here |
| Cat 262D3 | 2,200 | Mulcher 60" | 1,400 | ~1,100 | Machine can carry mulcher but working load margin is thin |
| Case SR270 | 2,700 | HD pallet forks | 800 | ~2,200 | Safe for most pallet loads under 2,000 lb |
| Bobcat T595 | 1,650 | Mulcher 60" | 1,400 | ~550 | Attachment exceeds safe operational margin — wrong machine |
Snowblowers are the one attachment category where the weight-versus-ROC calculation is less critical than it appears. A snowblower doesn't lift a payload — it moves material laterally through a spinning drum and auger and blows it through a chute. The machine never lifts the weight of the snow. The 800–1,800 lb attachment weight matters for transport, for boom cylinder stress, and for slope stability, but the snowblower itself being heavy doesn't reduce usable "payload" in the way a grapple or bucket does, because there is no discrete payload being lifted.
What does matter for snowblowers is hydraulic flow — a 96-inch two-stage blower needs 25–35 GPM to run efficiently, and an underpowered aux circuit produces a sluggish drum that packs instead of blows. That's a hydraulic flow problem, not a weight problem.
Mulchers sit at the heavy end of the weight table because the rotor, housing, and hydraulic motor are all dense components, and wider machines need bigger rotors. They also require high hydraulic flow — 25–40 GPM for most full-size units — which means they belong on machines with high-flow aux hydraulics.
Pair a 60-inch mulcher weighing 1,400 lb with a machine that has 2,200 lb ROC and you have 800 lb of net margin before the machine approaches its tipping threshold. On a hillside, with the boom extended to reach brush, that margin disappears. The correct machine for a 60-inch mulcher is a full-size CTL with 3,000+ lb ROC and high-flow hydraulics — a Kubota SVL95-2s, a Cat 299D3, a Bobcat T870. Using smaller machines to run large mulchers is how you get hydraulic overheating, frame stress, and a machine that's mechanically overmatched by its own attachment.
Spring road bans are a reality across Ontario, Manitoba, Saskatchewan, and Alberta. Posted load reductions of 50–75% on secondary highways mean that a combination of truck, trailer, machine, and attachment that's legal in July may not be legal in April. The attachment weight is part of that equation.
A 20-tonne float trailer with a 12,000 lb CTL and 1,800 lb snowblower attached is carrying 13,800 lb of equipment, plus the attachment's hydraulic fluid. Under a 75% spring restriction, a highway rated for 10,000 kg in normal conditions may be restricted to 7,500 kg. Check the provincial transport websites — Ontario's MTO, Alberta Transportation, Saskatchewan Highways — for current posted restrictions before moving equipment in April and May. Attaching an 1,800 lb snowblower to your machine for a "quick move" to the next job can push you into an overweight citation you didn't see coming.
The weight ranges in this guide are based on published manufacturer specs and represent realistic ranges across the market. For any specific attachment purchase or rental decision, use the manufacturer's spec sheet — not the dealer's verbal estimate, not a forum post, not a "similar" attachment's number from a different brand.
Manufacturer spec sheets are available directly from the manufacturer's website for all major brands: Blue Diamond, Paladin, McMillen, Bradco, Bobcat, Cat Work Tools, Virnig, and others. The weight is listed in the product documentation, not the marketing brochure. If a dealer can't produce a spec sheet with the attachment weight listed, ask why. Heavy attachments should have certified weight data — especially if they're being purchased to work near a machine's ROC limit.
Looking for specific models available in Canada? Browse the skid steer bucket catalog and grapple catalog for verified product pages on real models sold through Canadian dealers.