This is the question that trips up more attachment buyers than any other. "Will this work on my Bobcat?" The answer isn't always obvious — and getting it wrong means an expensive attachment that won't mount to your machine.
Here's the short version first: Bob-Tach is Bobcat's proprietary quick attach system. It is NOT the same as skid steer universal quick attach (SSQA). They look similar. They share the same general concept. The dimensions are different enough that they will not directly interchange without an adapter plate.
That said — most of the attachment market has settled on SSQA as the default standard. And adapter plates are widely available and work well. So this is solvable. You just need to understand what you have and what you're buying.
The skid steer universal quick attach — also called SSQA, universal quick tach, or just "universal" — is an informal industry standard that emerged in the 1990s as most manufacturers converged on similar dimensions for their attachment mounting plates. It's not a formal ISO standard. It's more of a "close enough that it works" consensus that developed as the aftermarket attachment industry grew.
The SSQA plate has two basic features:
Machines that use SSQA (or a very close variant) include Cat, Deere (most models), Case, Kubota (SCL and larger), New Holland, Gehl, Manitou, and most generic Chinese-manufactured skid steers. When an aftermarket attachment manufacturer says "universal skid steer quick attach," this is what they mean.
Bob-Tach is Bobcat's proprietary system. Bobcat developed it before the SSQA consensus developed, and they stuck with their design. The core concept is the same — top hooks, bottom latch — but the geometry is different.
Key Bob-Tach differences compared to SSQA:
All Bobcat wheeled skid steers and compact track loaders use Bob-Tach as standard — the S550, S650, S770, T550, T590, T650, etc. The Bobcat A300 and some older models had variations, but the current generation is uniformly Bob-Tach.
Cat uses the SSQA standard on their current 2xx and 3xx series compact track loaders and skid steers (262D, 272D, 279D, 289D, etc.). Earlier Cat machines — particularly the 226B, 236B generation — also used SSQA. Cat calls their version "Pin-Grabber" for their excavator line, but skid steer attachments use SSQA. So Cat buyers generally have the largest compatible aftermarket selection without needing adapter plates.
Deere calls their system "Quick-Tatch" — confusingly similar names everywhere — but it is dimensionally compatible with SSQA for most skid steer and compact track loader models (the 318E, 320E, 326E, 332G series, etc.). Most SSQA attachments will fit Deere machines directly. There are some older Deere models and the smaller 1 series compact utility loaders that use different systems — if you have an older machine, verify your specific model year.
The market isn't just Bobcat vs everyone else:
| Machine Brand | System Name | SSQA Compatible? | Notes |
|---|---|---|---|
| Bobcat | Bob-Tach | No — needs adapter | All current Bobcat SSLs and CTLs |
| Cat | (SSQA) | Yes | 262D, 272D, 279D, 289D, etc. |
| John Deere | Quick-Tatch | Yes (most models) | Verify model year for older machines |
| Case | Uni-Hitch / SSQA | Yes (current) | SR and TR series, SV and TV series |
| New Holland | (SSQA) | Yes | L and C series |
| Kubota SSL | K-Attach | Some models — verify | SSV65/SSV75 different from SVL CTLs |
| Gehl | (SSQA) | Yes | Current 3-6 series |
| Manitou | (SSQA) | Yes | Current 1700 and 2200 series |
If you have a Bobcat and want to use SSQA attachments — which covers most of the aftermarket — you need a Bob-Tach to SSQA adapter plate. This is a heavy steel plate that mounts to your Bob-Tach carrier and presents an SSQA face to the attachment. You attach the adapter once per work session (it stays on the machine), then swap SSQA attachments freely from that adapter.
The reverse also exists: SSQA to Bob-Tach adapters, for when you want to use an attachment that comes with Bob-Tach plate on an SSQA machine.
A quality Bob-Tach to SSQA adapter from a reputable manufacturer runs approximately $400–$700 CAD. That's the price range for domestically fabricated Canadian options or quality US-made imports. Cheap offshore adapters for under $200 exist — the concern with budget adapters is plate flatness, weld quality, and hook wear rate. The adapter is under constant cyclic stress; a plate that flexes or has a poor top hook engagement is a safety issue, not just an inconvenience.
Worth-buying brands that Canadian operators commonly use: Blue Diamond, Virnig, Paladin, and local Canadian fabricators (several Alberta and Ontario shops make quality adapter plates at competitive prices).
An adapter plate adds weight — usually 60–100 kg depending on the plate. That weight counts against your machine's rated operating capacity exactly like payload does. On a Bobcat S650 with a 972 kg ROC, a 90 kg adapter plate reduces your usable capacity to 882 kg before you add the attachment itself.
Adapter plates also add stack height between the machine and the attachment — typically 50–100 mm. This isn't a problem for most applications, but it matters for grading work where you need precise blade height control, and it marginally affects the machine's reach geometry when the loader is fully raised. Not a big deal for most users. Worth knowing.
Quick attach compatibility (the physical mounting plate) is completely separate from hydraulic coupler compatibility. Just because an attachment physically mounts to your machine doesn't mean the hydraulic connections will work.
Most current skid steers use ISO 16028 flat-face hydraulic couplers in the standard auxiliary circuit — the same standard across most manufacturers. But flow rates, pressure ratings, and the number of circuits (standard single-acting, double-acting, or high-flow) vary by machine.
A high-flow attachment (mulcher, cold planer, stump grinder) needs a machine with a high-flow auxiliary circuit — typically 110+ litres per minute at 3,000+ psi. A standard Bobcat S550 doesn't have high-flow. A Bobcat S650 does as a factory option but not as standard. See the standard flow vs. high flow guide and the hydraulic flow guide for full details on this — it's a separate buying decision from the quick attach question.
To avoid expensive compatibility mistakes, nail down three things before purchasing:
Call the seller before buying if you're not certain. Any reputable attachment dealer — Canadian or US — will confirm compatibility if you give them your machine model and serial number. Five minutes on the phone saves a return shipping headache on a 500 kg attachment.
Bobcat is one of the most common skid steer brands on Canadian job sites — particularly in western Canada. That means a huge proportion of Canadian operators are running Bob-Tach machines and dealing with this compatibility question constantly. The adapter plate route is completely standard practice; it's not a workaround, it's just how the market works.
If you're buying your first skid steer and have flexibility on brand, the SSQA vs. Bob-Tach question is worth factoring in. Not because Bob-Tach is inferior — it's a quality system — but because SSQA gives you a larger, more competitive aftermarket. That said, Bobcat's breadth of OEM attachment offerings is also excellent, and dealer support in most Canadian markets is strong. It's a wash unless you're specifically trying to source unusual specialty attachments.