Bobcat S770 Attachment Guide — What Fits, What Flows, What Works
The Bobcat S770 is a large-frame skid steer built for commercial construction, demolition, and serious landscaping work. With 2,690 lb ROC and optional high-flow hydraulics at 32.2 GPM, it opens the door to demanding attachments. Here's exactly what it can run and how to match attachments to this machine.
Based on published Bobcat manufacturer specifications, Bob-Tach (SSQA-compatible with adapter) coupler standards, and Canadian dealer context (Bobcat Canada's national dealer network). Written for Canadian operators evaluating attachments for the Bobcat S770. Not a dealer — no inventory verification. Last reviewed: 2026-03-17 by Skid Steer Attachments Canada.
Quick Fit Answer
Start with capacity, hydraulic flow, and coupler fit before comparing attachment brands.
Use this for attachment weight plus payload.
Primary number for augers, grapples, brooms, and most buckets.
Confirm the option is installed before buying high-flow attachments.
Mechanical fit still needs hydraulic and weight checks.
Bobcat S770 Machine Specs
The S770 is a large-frame wheeled skid steer on the Bobcat M-Series platform — a step up from the popular S650. It shares the same 2,690 lb ROC as the S650 but brings a larger frame, more weight, and an optional high-flow hydraulic kit. Commercial construction, demo work, and landscaping contractors across Ontario, the BC Lower Mainland, and Alberta urban sites run this machine regularly.
Bobcat S770 — Factory Specifications
Bob-Tach Coupler Notes
The S770 uses Bobcat's Bob-Tach quick attach system. Bob-Tach's coupler geometry is physically compatible with the industry-standard SSQA (Standard Skid Steer Quick Attach) with an adapter:
- SSQA adapter available: Bobcat sells an SSQA adapter plate that allows any universal SSQA attachment to mount to the Bob-Tach frame. Many S770 owners run one permanently to broaden attachment options.
- Bob-Tach branded attachments mount directly without any adapter
- Universal SSQA attachments (marked "universal fit" or "SSQA compatible") require the SSQA adapter — confirm you have one before ordering third-party attachments
- HLA Attachments (Ontario-made): Offers attachments in both Bob-Tach and SSQA configurations — worth specifying Bob-Tach fitment if you don't run an adapter plate
Hydraulic Flow Table
The S770's standard flow of 22.0 GPM covers the full range of common skid steer attachments. The optional 32.2 GPM high-flow kit opens mulchers, snowblowers, and cold planers. Here's how the numbers break down against common attachment categories:
| Flow Mode | GPM Available | Attachment Categories Supported |
|---|---|---|
| Standard Flow | 22.0 GPM | Buckets, forks, grapples, augers, brooms, blades, dozer blades, snow pushers, trenchers, post drivers, mixers, standard breakers |
| High Flow (optional kit) | 32.2 GPM | All standard flow items + mulchers (mid-size), snowblowers, rotary cutters, flail mowers, soil conditioners, cold planers (light-mid), large breakers |
Full Compatibility Matrix
Standard flow = 22.0 GPM. High flow = 32.2 GPM (if equipped with optional kit). ROC = 2,690 lbs.
✅ Standard Flow — Runs on All S770 Units
| Attachment | Compatibility | Notes |
|---|---|---|
| GP Buckets (dirt, gravel, rock) | ✅ Standard Flow | 68–72" optimal for this frame; 78" max |
| Pallet Forks | ✅ Standard Flow | 2,690 lb ROC; 48" forks standard; handles construction pallets and bales |
| Bale Spears | ✅ Standard Flow | Single and double spear; large frames handle big rounds well |
| Auger Drives (standard flow) | ✅ Standard Flow | Up to 18" bits in most soil; 22 GPM runs standard auger motors well |
| Dozer / Angle Blades | ✅ Standard Flow | 84–96" width optimal; larger frame provides better blade stability |
| Grapples (root, rock, brush) | ✅ Standard Flow | 66–72" widths work well; common on demo and land-clearing sites |
| Snow Pushers (box blades) | ✅ Standard Flow | 10'–14' optimal for this frame; no hydraulics required for passive pushers |
| Power Rakes / Landscape Rakes | ✅ Standard Flow | Hydraulic versions run well at 22 GPM |
| Box Blades / Landplanes | ✅ Standard Flow | 84–96" typical; passive attachment, no flow required |
| Post Drivers | ✅ Standard Flow | Standard-flow post drivers operate within 22 GPM range |
| Cement / Concrete Mixers | ✅ Standard Flow | Most drum mixers run 10–18 GPM; S770 std flow handles comfortably |
| Sweepers / Angle Brooms | ✅ Standard Flow | Hydraulic brooms typically 12–18 GPM; 72–84" common widths |
| Trenchers (standard flow) | ✅ Standard Flow | Check weight — heavy trenchers approach ROC limit |
| Hydraulic Breakers (mid-size) | ✅ Standard Flow | Mid-size breakers typically 12–22 GPM; confirm spec sheet |
| Backhoe Attachments | ✅ Standard Flow | Mid-size backhoe attachments fit; verify weight vs ROC |
✅ High Flow — Needs Optional 32.2 GPM HF Kit Installed
| Attachment | Compatibility | Notes |
|---|---|---|
| Mulchers / Forestry Heads (mid-size) | ✅ High Flow | Mulchers rated 25–32 GPM run well; aggressive 35+ GPM models exceed S770 HF ceiling |
| Snow Blowers (hydraulic) | ✅ High Flow | Most commercial snow blowers need 25–35 GPM; HF kit required |
| Rotary Cutters / Brush Cutters | ✅ High Flow | High-speed motors need 28–35 GPM; std flow underperforms significantly |
| Flail Mowers | ✅ High Flow | Commercial flail mowers typically 25–35 GPM; HF kit needed |
| Soil Conditioners | ✅ High Flow | Full-size soil conditioners run 25–38 GPM for rated performance |
| Cold Planers (light-mid) | ✅ High Flow | Light cold planers (up to 32 GPM rated) work; heavy planers needing 35+ GPM are marginal |
| Large Hydraulic Breakers | ✅ High Flow | Large-class breakers (750+ ft-lb) require 25+ GPM and higher pressure |
⚠️ Marginal / Not Recommended — Check Before Buying
| Attachment | Compatibility | Notes |
|---|---|---|
| Heavy Forestry Mulchers (35+ GPM) | ⚠️ Marginal | Aggressive commercial forestry heads designed for 35–45+ GPM will run sluggishly on the S770's 32.2 GPM HF. Consider a T76, S86, or Cat 289D3 for these applications. |
| Heavy Cold Planers (35+ GPM) | ⚠️ Marginal | Heavy cold planers typically want 35+ GPM. The S770 HF ceiling of 32.2 GPM is close but may result in reduced cut speed or motor stress. Verify attachment-specific GPM requirement. |
| Stump Grinders | CHECK WEIGHT | Commercial stump grinders range 1,800–3,500 lbs. S770 ROC is 2,690 lbs — heavy units may exceed this. Also requires HF for most models. Verify attachment weight and GPM requirement before purchase. |
| Heavy Trenchers | CHECK WEIGHT | Heavy-duty trenchers (rock chain, wide boom) can reach 2,000–2,800 lbs. Check attachment weight rating vs ROC. |
Recommended Attachment Widths for the S770
The S770 is a large-frame skid steer — bigger than the S650 — which means it can handle wider attachments while maintaining stability. These recommendations reflect the machine's physical footprint and ROC.
Buckets
Snow Pushers
Dozer / Angle Blades
Grapples
Power Rakes
Sweepers
What to Avoid on the S770
- High-flow attachments without confirming HF kit: Snow blowers, mulchers, and rotary cutters require the optional high-flow kit. Running these on a standard-flow S770 will damage the attachment's motor and produce poor results. Always verify by serial number or coupler port inspection before purchase.
- Oversized forestry mulchers (35+ GPM rated): The S770's 32.2 GPM HF ceiling leaves aggressive commercial mulchers underpowered. These attachments need a machine with higher HF output.
- Heavy stump grinders without checking both weight and GPM: Many commercial stump grinders exceed both the S770's ROC and standard flow simultaneously. Check both specs — not just one.
- Wide buckets beyond 80": Attachments wider than the machine's frame create instability and reduce forward visibility. Stick to 72" or below for most work; 78–80" only where site conditions demand it.
- Used attachments without verifying Bob-Tach compatibility: Third-party used attachments may have non-SSQA plates or custom mounts. If not running an SSQA adapter, verify the attachment was originally built for Bob-Tach geometry.
Canadian Regional Context
Ontario — Commercial Construction and Demo
The S770 is a strong fit for Ontario commercial construction, where its larger frame and high-ROC capability handle demo grapples, heavy buckets, and commercial snow pushers in parking lot and site management applications. Ontario Bobcat dealers (Bobcat of Toronto, Ottawa, Barrie, and regional dealers) support the S770 with parts and warranty service. The optional high-flow kit makes it competitive for landscaping and brush-clearing contracts common in the GTA fringe and cottage country belts.
BC Lower Mainland — Urban Construction and Site Work
In the BC Lower Mainland, the S770 appears on urban infill construction sites and landscaping operations where compact wheeled machines need to manage heavy material loads. Vertical lift geometry — useful for truck-loading above bed rails — is particularly practical on BC urban job sites where material is staged in trucks. Bobcat's BC dealer network (Metro Van and Fraser Valley locations) provides warranty and service support.
Alberta — Urban Construction and Landscaping Fleets
Alberta's urban construction market (Calgary, Edmonton) runs mid-to-large frame skid steers heavily. The S770 fits fleet operators who need a versatile machine for grading, material handling, and snow management. The optional high-flow kit is common in Alberta fleets that run mulching and brush clearing on the urban periphery and acreage development sites. Bobcat Canada dealer presence in Alberta supports parts availability nationwide.
Bobcat S770 Buyer FAQ
Can a Bobcat S770 run a commercial mulcher or snow blower?
With the optional high-flow kit, the S770 delivers 32.2 GPM, which is sufficient for many commercial mulchers and snow blowers. Verify the specific attachment's minimum GPM requirement — some commercial-grade mulchers require 35+ GPM. The S770 HF is well above the S590's 27.1 GPM ceiling and handles most mid-class high-flow attachments comfortably.
What bucket size is best for a Bobcat S770?
A 68–76" bucket suits the S770's 2,690 lb ROC and large frame. For heavy material like wet gravel or rock, stay at 68–72" to keep loaded payload within capacity. The S770's vertical lift arm is well-suited to truck-loading work, where maintaining ROC at full height matters.
Does the Bobcat S770 use Bob-Tach or universal SSQA?
The S770 uses Bob-Tach, Bobcat's proprietary quick-attach system. A Bob-Tach-to-SSQA adapter plate is needed for universal SSQA third-party attachments; Bob-Tach branded attachments mount directly. Many S770 owners run the SSQA adapter permanently to broaden their third-party attachment options.
Is the Bobcat S770 a common machine on Canadian urban and suburban construction sites?
Yes — the S770 is a popular large-frame machine on Ontario, BC Lower Mainland, and Alberta urban construction sites. Its vertical lift arm is well-suited to the truck-loading and material-staging work common in urban infill and subdivision development. Commercial construction and landscaping contractors often choose the S770 as a step up from the S650 when high-flow work is part of their regular scope.
Find the right attachments for your S770
The S770 handles everything from demo grapples to commercial snow pushers. If you have the HF kit, mid-size mulchers and snowblowers are also in range. Start with the catalog or browse by attachment type.