A hydraulic post driver on a skid steer turns a multi-person, multi-day fencing job into a single-operator operation. Here's how to choose the right type, size, and features for Canadian fencing conditions.
Skid steer-mounted post drivers use hydraulic force to drive fence posts into the ground without augering or pre-drilling in normal soil conditions. One operator on a skid steer can set several hundred posts per day in good Prairie soil — a job that would otherwise require multiple people and days with manual methods. The right attachment depends on your post type, soil conditions, and whether you're dealing with frozen or heavily compacted ground.
This is the fundamental choice. The two technologies work completely differently, and each has clear advantages and limitations:
Uses a hydraulically driven hammer that strikes the post cap repeatedly — similar in principle to a pneumatic jackhammer. Each blow drives the post incrementally deeper. Impact drivers are the most common type for farm fencing in Canada, and for good reason: they work in a wide range of soil conditions including partially frozen ground, hardpan, and heavy clay. The pounding action can start posts in soil conditions that stop a vibratory driver cold.
Key specs to compare: stroke length (how far the hammer travels per blow), impacts per minute (BPM — blows per minute), and impact energy in foot-pounds.
Uses a hydraulic vibration mechanism to liquefy the soil locally around the post as it's pressed in. Very fast in loose to medium soil — a post can be set in seconds in sandy or loam soil. Much quieter than impact drivers. The critical limitation: vibratory drivers lose effectiveness in clay-heavy soil and are largely ineffective in frozen ground. The vibration relies on soil particles momentarily separating — this doesn't work when the ground is frozen solid.
| Type | Best Soil | Frozen Ground | Typical Use |
|---|---|---|---|
| Impact (hammer) | Clay, hardpan, mixed Prairie soil | Can start posts in partially frozen ground | Prairie farms, heavy soils, year-round use |
| Vibratory | Sand, loam, light mixed soil | Largely ineffective | Coastal BC, light soil applications, speed in easy conditions |
For most Canadian Prairie and Central Canada buyers: An impact driver is the correct choice. The soil and seasonal conditions favour it heavily. Vibratory drivers make more sense in the BC Lower Mainland and other areas with consistently lighter, well-drained soils — and even then, only if you're confident you won't be fencing in late fall or early spring when frost is present.
Longer stroke = more energy per blow. A longer stroke allows the hammer to accelerate more before impact. For driving heavier posts into resistant Prairie soil, a longer stroke is an advantage. For light T-post work in easy conditions, a shorter stroke at higher BPM is often just as effective and drives faster.
More blows per minute drives posts faster in easy conditions. The tradeoff is that higher BPM often means shorter stroke and less energy per blow. In hard soil or heavy posts, a lower BPM with more energy per blow may actually drive faster and with less risk of post damage. Match the spec to your typical soil resistance.
Most post drivers run on standard auxiliary flow (12–20 GPM). High-flow variants offer higher BPM for production work — useful for contract fencing where speed matters across hundreds of posts per day. For farm fencing, standard flow is sufficient. No post driver requires high-flow for basic operation.
The guide tube or driver cap must match your post type and diameter. Using a mismatched guide tube splits wood posts, bends T-posts, and can jam the post in the driver — causing damage to both.
| Post Type | Guide Tube / Cap Size | Common Canadian Application |
|---|---|---|
| T-post (standard, 1.25" wide) | T-post cap insert | Prairie perimeter and cross fencing, livestock paddocks |
| 2" round steel | 2" round guide | Lighter farm and garden fencing |
| 2.5" round steel | 2.5" round guide | Standard farm steel post |
| 4" round wood | 4" round guide or cap | Wood post fencing, BC timber properties |
| 5"–6" wood post | 5"–6" guide | Corner posts, gate posts, large livestock operations |
| Square steel tube | Square guide (must match post OD) | Corral panels, commercial livestock facilities |
Most post drivers ship with 2–3 guide cap options. Confirm the specific caps included before ordering — if you're running multiple post types on your operation, verify all required caps are available for the model you're considering.
Prairie fencing in Canadian conditions means dealing with frost. Here's the practical picture:
Impact drivers in partially frozen ground: An impact driver can start posts in lightly frozen ground — the hammer energy is sufficient to break through a shallow frost layer. For deep frost penetration (mid-Prairie winter, frost to 4'+ depth), even an impact driver cannot drive posts to adequate depth without pre-drilling.
Vibratory drivers in frozen ground: Essentially non-functional. Do not attempt to use a vibratory driver on frozen ground — the post will not penetrate and you risk damaging the driver mechanism.
The practical solution for frozen-ground fencing: Pair an auger (with a frost bit) to pre-drill holes, then drive or set posts. The auger creates the penetration; the driver gives consistent depth and alignment. This combination is standard on Prairie operations that fence in late fall or early spring.
Miles of perimeter and cross fencing on quarter and half-section farms. Heavy clay and hardpan in many areas. Mixed conditions season to season. Impact drivers dominate this market. T-posts are the most common post type for interior and cross fencing; wood or heavy steel for corners and gates. A skid steer post driver allows one operator to handle full fence line installation on a working farm without dedicated fencing crews.
BC interior cattle operations have soil conditions ranging from rocky mountain terrain to river-bottom loam. Lower Mainland properties have soft, high-moisture soil where vibratory drivers work well in season. Interior BC is closer to Prairie conditions — harder ground, seasonal frost. Livestock operations in the Thompson and Okanagan regions typically run impact drivers for the same reasons as the Prairies.
High-density livestock operations in Ontario require consistent, reliable fencing. Post drivers are widely used for both new fence installation and periodic fence rebuilds after winter damage. Standard T-post and wood post combinations. Impact drivers are the standard. Many Ontario operators also use the skid steer with an auger for footing holes on corner and gate posts before driving the adjacent line posts.
| Brand | Type | Canadian Availability | Notes |
|---|---|---|---|
| McMillen | Impact | Available through Canadian dealers | Well-established, strong reliability reputation, good support network |
| Worksaver | Impact / Vibratory | Available Canada-wide | Broad product line, both impact and vibratory models |
| Rhino | Impact | Available through Canadian ag dealers | Popular in ag market, good Prairie distribution |
| Bobcat | Impact | Through Bobcat dealer network | Proprietary coupler advantage; well-integrated on Bobcat machines |
Post drivers are available as rentals at many western Canadian equipment dealers — for a single fence project under about 200 posts, rental is often more economical than ownership. For operations that fence regularly, ownership pays back within one or two seasons.
Post drivers carry specific safety risks that must be managed on every job:
Impact. Prairie soils — hardpan, clay, glacial till — require the hammer energy of an impact driver to penetrate consistently. Vibratory drivers work well in light sandy and loam soil but lose effectiveness in clay and are non-functional in frozen ground. For year-round Prairie fencing, an impact driver is the only practical choice.
No. Standard auxiliary flow (12–20 GPM) handles all typical post driver work. High-flow variants exist and deliver more blows per minute for high-volume production fencing, but for farm and property fencing, standard flow is more than adequate. This is one of the few hydraulic attachments that runs well on older or simpler machines with basic aux hydraulics.
T-posts require a T-post specific cap insert — not a round guide. T-posts are a flat-flanged shape, and a round guide allows them to rotate and misalign during driving. Most post drivers include a T-post cap in the standard kit. Confirm the cap is included for your post type before ordering.
In good Prairie soil with T-posts, a skid steer impact driver manages 150–300+ posts per hour including machine repositioning between posts. In heavy clay or partially frozen ground, expect 80–150 posts per hour. Compare this to manual post driving: 50–80 posts per hour with a skilled crew. The productivity advantage grows with fence line length and soil difficulty.
Yes. Western Canadian equipment rental companies — particularly in Alberta, Saskatchewan, and Manitoba — carry post driver attachments seasonally. Rental is often the right call for a single fence project or a one-time property rebuild. For any operation doing regular fencing (new fields, fence rebuilds, annual maintenance), ownership pays back within 1–2 seasons of typical use.
See Canadian-available skid steer post drivers with specs, post size compatibility, and flow requirements.