Bobcat S590 Attachments Buyer Guide — What to Look For

Bobcat S590 attachments fit or fail based on five factors — and getting even one wrong means a return trip or a piece of iron that sits in the yard. Those five factors: mount interface type, hydraulic flow and pressure rating, rated operating capacity versus attachment weight, hose configuration, and the actual work you're doing. This guide breaks down each one with specific numbers so you match the right attachment to your S590 without guessing, without calling three dealers, and without buying something that hangs off the coupler plate wrong.

What Specifications Should You Verify Before Buying Bobcat S590 Attachments?

Successful attachment purchases require verification of 3 critical specification categories: machine compatibility, build quality standards, and hydraulic flow requirements. Each category contains specific measurements and ratings that determine whether an attachment will function properly and withstand job site demands.

What Compatibility Specifications Must Match?

The Bobcat S590 uses the Bob-Tach or optional universal quick-attach mounting interface. Any attachment must match the specific coupler plate geometry on the machine. A mount mismatch prevents physical connection and creates a serious safety hazard under load.

• Mount interface: Bob-Tach proprietary or universal skid steer quick-attach (also called the "universal" plate) — a mismatch means the attachment physically cannot lock onto the machine
• Attachment weight vs. rated operating capacity: the S590 carries a 1,900 lb rated operating capacity (50% tipping load) — any attachment plus its payload that exceeds 1,900 lb risks tipping the machine forward
• Hydraulic coupler size: the S590 uses 1/2-inch flat-face hydraulic couplers as standard — attachments with 3/4-inch couplers require adapter fittings that reduce flow efficiency by 10% to 15%

What Build Quality Specs Determine Durability?

Steel thickness on the frame and cutting edges determines how long an attachment lasts under daily use. Light-duty attachments use 3/16-inch plate steel. Heavy-duty versions use 1/4-inch to 3/8-inch plate. Anything below 3/16-inch is hobby-grade and warps under commercial loading cycles.

• Frame plate steel: minimum 1/4-inch for daily commercial use — 3/16-inch flexes and cracks at weld joints within 6 to 12 months of heavy cycling
• Cutting edge or tine material: AR400 hardened steel minimum for ground-engaging tools — mild steel edges dull in 20 to 40 hours and require replacement
• Weld type: continuous bead welds on all structural joints — skip welds or tack welds fracture under repeated shock loading

What Hydraulic Flow Requirements Apply to S590 Attachments?

The Bobcat S590 produces 17.4 GPM of standard auxiliary hydraulic flow at approximately 3,000 PSI. The optional high-flow package delivers up to 27.4 GPM. Powered attachments — mulchers, augers, brush cutters, trenchers, and stump grinders — each require a minimum GPM rating that must fall within the machine's output.

• Standard-flow attachments (grapples, pallet forks, buckets, bale spears, dozer blades, snow pushers): operate on 0 to 17.4 GPM — these use single-acting or basic double-acting hydraulics
• High-flow attachments (mulchers, brush cutters, stump grinders): require 20 to 30 GPM — these are incompatible with the S590 unless the high-flow option is installed
• Mid-range powered attachments (augers, trenchers, log splitters): typically require 12 to 20 GPM — verify the specific model's minimum GPM against the S590's 17.4 GPM standard output

Decision rule: if the attachment requires more than 17.4 GPM, confirm your S590 has the high-flow hydraulic package installed. If it does not, restrict selection to standard-flow attachments only.

What Do Different Bobcat S590 Attachment Price Tiers Offer?

Attachment pricing typically follows 3 distinct tiers offering different combinations of materials, construction methods, and warranty coverage. Each price level corresponds to specific build specifications, expected service life, and operational capabilities that match different usage requirements.

What Do You Get at Each Price Level?

Bobcat S590 attachments fall into three price tiers across most categories, from basic grapples and buckets to powered implements.

• Entry-level ($400 to $1,200): 3/16-inch frame steel, imported cylinders, limited or no warranty beyond 90 days, bolt-on cutting edges — suits property owners using attachments fewer than 50 hours per year
• Mid-range ($1,200 to $3,500): 1/4-inch frame steel, domestic or name-equivalent cylinders, 12- to 24-month structural warranty, replaceable wear parts — suits contractors and landscapers running 200 to 600 hours per year
• Professional ($3,500 to $9,000+): 3/8-inch frame steel on high-stress areas, hardened pins, greaseable bushings on every pivot, 24- to 36-month warranty, AR400 or AR450 wear surfaces — suits daily commercial operators logging 600+ hours per year

What Specifications Change at Each Tier?

The largest specification jump between entry and professional tiers is steel thickness — from 3/16-inch to 3/8-inch on critical stress points. Cylinder bore increases from 2-inch to 3-inch or larger, which doubles clamping or digging force. Pin material moves from plain carbon steel to heat-treated alloy. Bushing type goes from none (pin-on-pin) to greaseable bronze or composite bushings that extend pivot life by 3x to 5x.

When Is Entry-Level Sufficient?

Entry-level attachments perform acceptably at fewer than 50 operating hours per year on non-commercial tasks. Property owners moving brush piles a few times per season, or farm owners handling bales fewer than 30 days annually, get adequate service life from this tier. Beyond 50 annual hours or in rocky or abrasive soil conditions, step up to mid-range.

What Should You Avoid When Buying Bobcat S590 Attachments?

Common purchasing mistakes center on 3 problem areas: misleading product listings, exaggerated performance claims, and inadequate warranty terms. Recognizing these issues before purchase prevents costly equipment failures and protects against substandard attachment performance.

What Are the Red Flags in Listings and Products?

The most common red flag is a listing that does not specify steel thickness anywhere in the description. Any quality manufacturer publishes exact material gauge. Absence of this spec indicates the seller either does not know or does not want the buyer comparing directly.

• No steel thickness listed: indicates the manufacturer is hiding thin-gauge construction — request the spec sheet before purchasing
• "Universal fit" with no mount type specified: the term "universal" is meaningless without confirming the exact quick-attach plate dimensions — 2-inch pin spacing and 8.5-inch pin-to-pin height for standard skid steer interface
• Stock photos instead of actual product photos: suggests the product is drop-shipped from an overseas factory with inconsistent quality control across production runs
• Weight not listed: attachment weight directly impacts remaining payload capacity — a 72-inch grapple that weighs 850 lb leaves only 1,050 lb of usable capacity on the S590

What Specifications Are Frequently Overstated?

Clamping force and bucket capacity are the two most commonly inflated specifications. Sellers list theoretical maximum clamping force at full hydraulic pressure, but actual force at the tip of tines is 30% to 50% lower due to mechanical disadvantage. Verify "tip force" rather than "cylinder force." Bucket capacity listed in heaped cubic yards assumes a perfect mound — struck capacity is the reliable number, typically 15% to 20% less.

What Warranty Terms Should You Verify?

Minimum acceptable warranty for mid-range and professional bobcat S590 attachments is 12 months on structural components. Hydraulic cylinders carry separate coverage. Read exclusions carefully — some warranties void coverage for "commercial use," which defeats the purpose for contractors.

• Structural welds: minimum coverage 12 months — professional-grade offers 24 to 36 months
• Hydraulic cylinders and hoses: minimum coverage 6 months — quality manufacturers cover 12 months
• Wear parts (cutting edges, tines, teeth): typically excluded or limited to 90 days — this is normal and acceptable

How Do You Match Bobcat S590 Attachments to Your Situation?

Proper attachment selection requires systematic evaluation of 3 factors: required size specifications, operational requirements, and complete compatibility verification. This matching process ensures the chosen attachment delivers optimal performance for specific job applications and site conditions.

How Do You Determine the Right Size?

Size every attachment to the S590's 1,900 lb rated operating capacity and 66-inch to 72-inch frame width. Oversized attachments exceed the machine's lift capacity and obstruct visibility. Undersized attachments waste cycle time and reduce productivity per pass.

• If clearing brush and managing land: choose a root grapple or standard grapple in 66-inch to 72-inch width — browse skid steer grapples sized for mid-frame machines
• If handling palletized material and construction supplies: choose skid steer pallet forks rated at minimum 4,000 lb capacity with 42-inch or 48-inch tines
• If digging, trenching, or boring post holes: choose an auger or trencher that operates within the S590's 17.4 GPM standard flow — confirm minimum GPM requirement before ordering

What Questions Should You Ask Before Purchasing?

Five questions separate a good purchase from a costly mistake — and most sellers do not volunteer this information unless asked directly.

• "What is the exact mount interface — Bob-Tach, universal skid steer quick-attach, or something else?" — reveals whether the attachment physically connects to your S590 without modification
• "What is the minimum hydraulic GPM required to operate this attachment at full performance?" — reveals whether your standard-flow or high-flow configuration is sufficient
• "What is the total weight of the attachment without payload?" — reveals your remaining usable lift capacity after the attachment's own weight
• "What gauge steel is the frame built from, and what material are the cutting edges or wear surfaces?" — reveals true durability and separates mid-range from entry-level construction
• "Does the warranty cover commercial use, and what specific components are excluded?" — reveals whether the warranty has real value for a working contractor versus a homeowner-only policy

What Is the Complete Pre-Purchase Specification Checklist?

Verify all 10 specifications below before committing to any purchase for your S590.

• Mount interface type: confirm Bob-Tach or universal skid steer quick-attach compatibility
• Attachment weight: verify total weight falls within 1,900 lb rated operating capacity minus intended payload
• Hydraulic flow requirement: confirm GPM demand is at or below 17.4 GPM (standard) or 27.4 GPM (high-flow)
• Hydraulic pressure rating: confirm attachment operates at 3,000 PSI or below
• Hydraulic coupler size: verify 1/2-inch flat-face couplers or confirm adapter availability
• Frame steel thickness: minimum 3/16-inch for light use, 1/4-inch for daily commercial use
• Cutting edge or wear surface material: AR400 minimum for ground-engaging attachments
• Overall width: 66 to 72 inches for proper proportion to S590 frame
• Weld specification: continuous structural welds on all load-bearing joints
• Warranty coverage: minimum 12 months structural, 6 months hydraulic, with commercial-use eligibility confirmed

What Are the Most Popular Bobcat S590 Attachment Types?

Market demand concentrates on specific attachment categories based on the S590's 2,000-pound rated operating capacity and 23.5 GPM standard hydraulic flow. Attachment popularity varies between standard-flow and high-flow configurations depending on power requirements and operational complexity.

Which Attachments See the Highest Demand for This Machine?

Grapples, pallet forks, and buckets are the three most-purchased attachment categories for the S590. Grapples handle brush, logs, demolition debris, and scrap. Pallet forks move building materials, feed pallets, and equipment. Buckets handle grading, backfilling, and loading trucks. These three cover 70% or more of typical operator needs.

Which Powered Attachments Work on the S590's Standard Hydraulic Flow?

Augers requiring 10 to 17 GPM operate on the S590's standard 17.4 GPM output without the high-flow package. Trenchers in the 36-inch to 48-inch depth range typically require 14 to 18 GPM — verify the exact model. Log splitters operate at 8 to 14 GPM and work well within standard flow. Backhoe attachments use basic double-acting hydraulics at low GPM and pair well with this machine class.

Which Attachments Require the High-Flow Package?

Mulchers, brush cutters, and stump grinders require 20 to 30+ GPM and do not reach operating speed on standard flow. Running a high-flow attachment on 17.4 GPM starves the motor, causes overheating, and cuts productivity by 40% to 60%. If your S590 lacks the high-flow option, do not purchase these attachments — the motor will not spin fast enough to cut effectively and risks premature hydraulic motor failure.

Frequently Asked Questions About Buying Bobcat S590 Attachments

Buyers commonly ask 5 essential questions covering compatibility, purchase timing, warranty terms, total ownership costs, and hydraulic verification methods. These questions address the most critical decision points that determine attachment purchase success and long-term satisfaction.

Will Any Skid Steer Attachment Fit a Bobcat S590?

Not automatically. The S590 uses either the Bob-Tach proprietary mount or the universal skid steer quick-attach plate, depending on the coupler installed.

Attachments built for the universal quick-attach interface — the most common standard across manufacturers — fit the S590 if your machine has the universal coupler plate. Machines with the Bob-Tach system only accept Bob-Tach-compatible attachments unless a universal adapter plate is installed. Check your coupler type before purchasing any skid steer attachments to confirm physical compatibility.

Is It Better to Buy New or Used Bobcat S590 Attachments?

New attachments cost 40% to 100% more than used equivalents but include a warranty and verified specifications.

Used attachments require hands-on inspection before purchase. Check cylinder rods for scoring or pitting — any visible grooves mean the cylinder seal is compromised. Inspect weld joints for cracks, especially where the mount plate meets the frame. Measure cutting edge thickness — less than 50% of original thickness means a $150 to $400 replacement is needed immediately. Used mid-range attachments in good condition are often the highest-value purchase.

What Warranty Terms Are Standard for Skid Steer Attachments?

Expect 12 to 24 months of structural warranty coverage from any reputable manufacturer selling to commercial users.

A 90-day warranty signals entry-level consumer-grade construction. Warranty exclusions to watch: "damage from normal commercial use," "cosmetic damage to paint or finish" (acceptable exclusion), and "misuse" without defining misuse. Hydraulic cylinder coverage of at least 6 months is standard. Ask for the warranty document before purchasing — verbal assurances are unenforceable.

What Is the True Total Cost of Owning an Attachment Over Five Years?

Total five-year cost equals purchase price plus wear part replacements plus any hydraulic maintenance.

A mid-range grapple at $2,000 typically requires one set of tine rebuilds or cutting edge replacements ($200 to $400) and one cylinder reseal ($150 to $300) over five years of moderate use at 200 to 400 annual hours. That brings true five-year cost to $2,350 to $2,700. An entry-level grapple at $700 that needs frame welding repair ($300 to $600) and earlier cylinder replacement ($400 to $600) can reach $1,400 to $1,900 — only 30% less than mid-range with far more downtime.

How Do You Verify Hydraulic Compatibility Before Ordering?

Pull the S590 operator's manual and confirm auxiliary hydraulic flow rate (17.4 GPM standard, 27.4 GPM high-flow) and operating pressure (3,000 PSI).

Request the attachment's specification sheet from the seller — it lists minimum and maximum GPM and PSI requirements. Cross-reference these numbers directly. If the attachment requires more GPM than your machine produces, it is not compatible regardless of physical mount fit. For skid steer grapples and other non-powered attachments, hydraulic compatibility is rarely an issue since they operate on basic auxiliary flow.