What Size Bucket for My Skid Steer?

Bucket width is one of the most frequently misunderstood specs in skid steer attachments. Operators often default to "wider is more productive" — and it usually is, on open sites. But a bucket that's too wide for your machine class puts the machine off-balance, makes tight work impossible, and can overload the hydraulics and lift arms on smaller frames. A bucket that's too narrow leaves productivity on the table and means more passes to do the same job.

Getting this right involves three factors: your machine's rated operating capacity (ROC) and physical frame size, the track or tire width, and what you're actually doing with it. This guide covers all three.

The 110–120% Rule

The industry starting point for bucket width selection is simple: the bucket should be approximately 110–120% of the machine's track width (or tire width on wheeled skid steers). This rule has real engineering logic behind it — at this width, the bucket slightly overhangs the tracks on each side, which means loose material you've dug up is pushed slightly outside the track path on both sides. The machine doesn't re-drive over everything it just moved, reducing resistance and wear on the undercarriage.

Going narrower than track width means you're essentially in a rut — the machine climbs over its own spoil on every pass. Going significantly wider than 120% of track width creates lateral instability on slopes and loading moves, and puts bending stress on the quick-attach coupler that the frame wasn't designed to handle continuously.

The 110–120% rule is a starting point, not a rule to follow blindly. Job type matters significantly — more on that below. But if you're buying a general-purpose (GP) bucket and you don't have a specific constraint, this range puts you in the right place.

Machine Class Breakdown

Manufacturers and dealers segment skid steers into rough class tiers based on rated operating capacity (ROC) — the maximum load the machine is rated to carry at 50% tipping load. Here's how bucket width typically maps to each class, with real machine examples common in Canada:

Compact Class — Under 1,200 lbs ROC

Examples: Bobcat S70 (760 lbs ROC), Kubota SSV65 (1,102 lbs ROC), New Holland L213

These machines have narrow frames — typically 47–52" track width — and limited hydraulic capacity. The appropriate bucket range is 60–66". A 72" bucket overpowers a compact-class machine on loaded moves and creates handling issues on slopes. The S70 in particular is often run in tight spaces (buildings, greenhouse work, narrow alleyways) where a 60" bucket is the practical maximum regardless of the 110% calculation.

Mid-Frame — 1,200 to 1,750 lbs ROC

Examples: Bobcat S570 (1,302 lbs ROC), John Deere 320G (1,600 lbs ROC), Caterpillar 262D3 (1,700 lbs ROC), Case SR240

The most common skid steer class in Canada — this is what most landscapers, small contractors, and farm operators are running. Track width typically 59–65". The sweet spot for a general-purpose bucket is 68–72". A 72" bucket is a natural fit for loading trucks and site clearing; a 68" is the better call for operators doing a mix of tight and open work.

Large-Frame — 1,750 to 2,500 lbs ROC

Examples: Bobcat S740 (2,200 lbs ROC), Case SR270 (2,690 lbs ROC, upper end), John Deere 332G (2,350 lbs ROC), Caterpillar 272D3

Larger frames, typically 63–68" track width, with substantially more hydraulic and lifting capacity. These machines are built for moving real volumes of material. General-purpose bucket range: 72–80". An 80" bucket on a Bobcat S740 is well within the machine's capability and maximizes productivity on loading and site clearing work.

Heavy / Full-Size — 2,500+ lbs ROC

Examples: Bobcat S850 (3,350 lbs ROC), Caterpillar 289D3 (3,200 lbs ROC), JCB 330 (3,300 lbs ROC)

The largest skid steer class. Track widths up to 72–76". These machines are legitimately close to small excavator territory in capability and are often used on high-volume earthwork, demolition site cleanup, and heavy aggregate handling. Bucket range: 80–96". A 96" bucket on a full-size machine makes sense on wide-open site clearing and truck loading. Running that same bucket on a mid-frame machine would be dangerous.

Capacity vs Width Trade-offs

Wider buckets move more material per pass — that's the obvious upside. A 78" bucket with a 12 cubic foot capacity vs a 66" bucket with 8 cubic foot capacity means you load a truck in fewer passes. On open sites where the machine isn't constrained, that productivity advantage is real.

The downside of going wide has two parts:

1. Handling in tight spaces. A wider bucket changes the effective width of your machine significantly. A 72" bucket means your total working width is roughly that bucket width plus the frame — plan accordingly. In landscaping beds, along building foundations, through gate openings, or on narrow access roads, every inch of extra bucket width is a constraint.

2. Weight distribution. A larger bucket holds more material weight at the end of the lift arms. For a given machine, a wider (heavier, higher-capacity) bucket loaded full puts more moment load on the quick-attach coupler and the lift arm geometry than a narrower one. Within the rated bucket size for a machine class, this is engineered for. Running a significantly oversized bucket on a smaller machine is how quick-attach couplers get bent and lift cylinders get damaged.

When to Go Narrower Than the Rule Suggests

The 110–120% rule is the baseline for general-purpose work. A number of specific scenarios call for going narrower:

• Working inside buildings or tight structures — doorways are typically 84–96" in commercial buildings, narrower in residential. A 72" bucket may be fine; an 84" bucket won't make it through many standard openings. Account for the machine width too, not just the bucket.
• Alley trenching and utility work — trench work often requires placing spoil immediately beside the trench. A narrower bucket gives you more control over pile placement and lets you work in constrained urban right-of-way.
• Landscaping beds and garden areas — placing material precisely in planting beds, grading around existing plants or hardscape, or backfilling narrow trenches all benefit from a narrower bucket even if the machine could handle wider.
• Doorway-constrained sites — anything under 8 feet clear opening is a constraint for standard mid-frame and larger skid steers. Factor the bucket width explicitly.
• Soft underfoot conditions — on very soft ground (spring thaw, saturated soil), a wider loaded bucket shifts the centre of gravity forward more aggressively. Narrower (and lighter when empty) buckets handle marginal ground conditions better.

When to Go Wider

• Loading articulated trucks, dump trucks, or trailers — productivity is everything. A wider bucket fills the box faster. If the site is open and you're in a loading loop, take the widest bucket your machine can properly handle.
• Large-scale site clearing — pushing piles, clearing debris, stripping topsoil over large areas. Width equals speed.
• Gravel and aggregate work — stockpile management, loading crushers, yard material handling. Wide buckets at high cycle rates on open flat yards.
• Snow removal — open lots — a wider bucket pushes more snow per pass on parking lots and large open areas. (Note: for snow specifically, a snow pusher often outperforms a bucket — see the dedicated snow removal guide.)

How Bucket Type Affects the Sizing Decision

Not all buckets of the same listed width behave the same. The bucket type affects both actual working width and the appropriate sizing for your machine:

General Purpose (GP) Bucket

Standard dirt/gravel bucket. The baseline. When people talk about bucket sizing rules, they're talking about GP buckets. Mild steel or AR400 cutting edge, moderate wall thickness, bolt-on teeth optional. Size per the class guidance above.

Rock Bucket

Heavier construction — thicker floor plate, heavier side walls, often with bolt-on teeth standard. The additional steel weight means a rock bucket of the same listed width weighs more than a GP bucket. For a borderline machine (say, a mid-frame machine running a 78" bucket), a rock bucket version of that same 78" would push the machine harder due to the added empty weight. When moving to a rock bucket, some operators step down 4–6" in width vs what they'd run in a GP to stay within safe limits.

4-in-1 Bucket (Multi-Purpose)

4-in-1 buckets open at the bottom and function as a clam, a dozer blade, a GP bucket, and a grapple. They're heavier and mechanically more complex than a GP bucket. At any given listed width, a 4-in-1 weighs more than a GP bucket of the same size. As a practical rule, size a 4-in-1 bucket 4–6 inches narrower than you'd choose for a GP bucket on the same machine — a machine that comfortably runs a 72" GP will run a 66–68" 4-in-1 without overloading the quick-attach and lift arms. The weight matters more than the width number on the label.

Skeleton / Root Grapple Bucket

For debris, rock, and material separation — the open tine construction means these are significantly lighter than solid buckets at the same listed width. Sizing up slightly from the GP bucket recommendation is reasonable if you're using a skeleton bucket primarily for rock or debris work.

Common Sizes Stocked in Canada

Canadian equipment dealers and attachment suppliers typically stock or readily source these standard widths:

• 60" — compact machines, tight-space work, indoor applications
• 66" — compact to small mid-frame, versatile tight-space bucket
• 68" — mid-frame machines, good mix of capacity and maneuverability
• 72" — most common size in Canada, suits the majority of mid- to large-frame skid steers
• 78" — large-frame machines, high-productivity loading and clearing
• 84" — full-size and large-frame, open site work
• 96" — heavy class machines, maximum productivity on open sites

Non-standard widths (70", 74", 80") exist and can be sourced, but lead times are longer and resale is harder. Unless you have a very specific constraint that a standard size doesn't fit, stay with common widths.

Quick-Reference Sizing Table

Buying Used: What to Check

Used buckets are a solid way to save money in Canada — they turn up constantly at farm auctions, equipment dealers, and through online classifieds. When buying used, verify:

• Cutting edge thickness — the bottom edge wears fastest. Measure it. A heavily worn cutting edge means the bucket floor itself starts to take wear next.
• Side wear plates — the outer corners take significant abuse. Check for cracks or wear-through.
• Quick-attach compatibility — Canada has machines with both universal skid steer (Bob-Tach compatible) plates and other configurations. Verify your coupler interface before buying. Most attachments use the universal skid steer plate, but older or specialty machines may differ.
• Floor plate condition — hold a flashlight inside and look for cracks along the weld seams at the back corners. That's where stress concentrates.