The fork frame is the part that connects to your skid steer and holds the tines. It sounds like a commodity part — a metal frame, what's to know? Quite a bit, it turns out. Carriage class, rated capacity, backrest height, tine spread, and whether the forks are fixed or floating all affect how well the setup works for your actual jobs.
A complete pallet fork setup has two components: the frame (also called the carriage) and the tines (the forks themselves). The frame bolts to your skid steer's quick attach. The tines slide onto the frame's fork bar and are secured with locks or pins.
You can buy them as a matched set or separately. If you already own forks that fit a standard ITA carriage bar, you just need a frame. If you're buying new, matched sets are usually the right call — the tines are spec'd to the frame's rated capacity. Mixing and matching capacities is where operators get into trouble.
The fork bar on a skid steer frame follows ITA (Industrial Truck Association) carriage standards. Most skid steer pallet fork frames are Class 2, though heavier setups use Class 3. The class determines the fork bar dimensions and spacing — a Class 2 fork won't slide onto a Class 3 bar, so matching matters if you're buying forks separately from a frame.
| ITA Class | Typical Capacity Range | Common Use |
|---|---|---|
| Class 2 | 2,000–5,500 lbs | Mid-size and full-size skid steers; general farm and construction use |
| Class 3 | 5,500–8,000+ lbs | Large skid steers and CTLs; heavy material handling, lumber yards |
| Class 1 | Up to 2,500 lbs | Compact/mini skid steers (Bobcat MT series, Toro Dingo) |
For most Canadian operators on a mid-size skid steer — Bobcat S570, Kubota SSV75, Case SR270 — a Class 2 frame rated at 4,000 lbs is the right starting point. It handles standard pallets, round bales, lumber bundles, and most farm material movement without being oversized for the machine.
Frame and fork capacity ratings assume the load is centered at the "load center" — typically 24" back from the fork tips. Move the load further back and effective capacity goes up. Move it forward — like when you're carrying a long, awkward bundle — and it goes down. This is the spec that operators underestimate constantly.
A 4,000-lb rated frame doesn't mean you can carry 4,000 lbs of anything. A round bale that's 5 feet across, centered 36" back from the fork tips, puts the load well beyond the rated load center. The effective capacity in that scenario is lower. Know your machine's rated operating capacity (ROC) — typically 50% of tipping load — and stay inside it. Bobcat's S770, for example, has a 3,150 lb ROC. A 4,000-lb fork frame attached to that machine doesn't change what the machine can safely lift.
Frames come with either fixed tine positions (tines welded or bolted in place at a set spread) or adjustable tines (tines that slide along the fork bar to different positions and lock with pins or hooks).
Adjustable is almost always the right choice. Standard pallet tine spread is 20"–22" inside measurement for a standard 40"x48" pallet. But you'll also want to pick up bales (which need wider spread), lumber bundles (sometimes narrower for getting under the straps), and all kinds of awkward material. Adjustable tines let you move from 16" to 36"+ spread depending on the job.
Fixed tines are lighter and slightly cheaper, but the flexibility loss isn't worth it for most operators. The one case for fixed: you're using the forks exclusively for one specific, repetitive task where the load dimensions never change — like a specific pallet size in a warehouse setting. On a farm or job site with varied material? Go adjustable.
The backrest is the vertical plate that prevents loads from sliding backward into your machine when you tilt the forks back. Low backrests (24"–30") are fine for pallets and round bales — the load is stable and contained. Taller backrests (36"–42") are worth the extra money if you're handling loose material, unstable bundles, or anything that shifts when you tilt back.
Operators loading lumber — especially rough-cut lumber from a sawmill — consistently recommend the taller backrest. A standard 30" backrest doesn't catch a bundle of 2x6s that start sliding when you lift. The HLA 4200 series frames, for instance, come with a standard 42" backrest precisely for this reason.
A fork frame adds 250–500 lbs of attachment weight to the front of your machine before you put any load on it. That matters for a skid steer because it affects the machine's rear traction when working without a load.
Heavier frames provide slightly more stability when carrying heavy loads. But on a light machine (compact skid steer in the Bobcat S450 class), a 400-lb frame with 48" tines adds meaningful dead weight to the nose. Match frame weight to machine class: compact machines do better with lighter frames (Class 1 or lighter Class 2); full-size machines handle heavier Class 2 and Class 3 frames without issue.
Standard fork frames tilt only via the skid steer's bucket circuit — meaning you can tilt the whole carriage forward and back, but the forks themselves don't move relative to the frame. That's fine for most material handling work.
Hydraulic side-tilt fork frames add the ability to level the forks on uneven ground without repositioning the machine. On a CTL working across a slope, or when setting material into a truck bed from the side, this is genuinely useful. It costs extra — count on another $400–$800 CAD on the frame price — and requires your machine to have a second auxiliary hydraulic circuit, or a dedicated circuit with a proportional valve.
For most operators doing farm work, construction material movement, and basic site logistics: standard tilt is fine. For operators working on consistent grades or doing precision placement work: the hydraulic side-tilt pays off quickly in reduced repositioning time.
Fork frames are widely available in Canada. A few reliable sources:
| Duty Level | Capacity | New CAD Price Range | Best For |
|---|---|---|---|
| Light duty | 2,500 lbs | $600–$1,100 | Compact skid steers, light farm use |
| Standard duty | 4,000–5,000 lbs | $1,000–$1,800 | Mid-size and full-size machines, most applications |
| Heavy duty | 5,500+ lbs | $1,800–$3,200 | Full-size CTLs, lumber yards, heavy material cycle work |
Used fork frames are genuinely low-risk purchases compared to most attachments. No hydraulics on a standard unit, minimal wear surfaces. But inspect these things specifically:
Some fork frames include a 2" receiver hitch tube built into the frame — useful for attaching a pintle hook or pulling equipment while the forks are mounted. HLA and several other manufacturers offer this. It's a minor feature but genuinely handy on a farm or site where you need to tow a trailer a short distance without switching attachments.
Just be aware that receiver hitch towing on a skid steer has a very low tow rating — the machine's tongue-weight capacity is limited, and the forces on the attachment plate are different from the intended direction of loading. Short, light moves only.
Looking for specific models available in Canada? Browse the skid steer pallet forks catalog for verified product pages on real models sold through Canadian dealers.