Fan Belt 6718730 for Bobcat 5600 773 S150 S160 S175 – Fleet Supply

Fleet Stocking — Scheduled replacement for Bobcat skid steer fan belts keeps maintenance predictable across mixed-model fleets.

Technical Specifications

Application Suitability

Why Fan Belts Fail Between Scheduled Services

A Fan Belt service part for Bobcat Skid Steer Loader maintenance must be treated as a consumable with a defined service life, not a fit-and-forget component. Fleet managers who skip proactive replacement often discover the belt only when the engine overheats mid-shift. On demolition sites and quarry loading zones running 8–12 hour shifts under full load, thermal cycling and dust infiltration accelerate rubber degradation faster than calendar-based schedules anticipate. I have watched operators on Bobcat S175 units ignore early squealing for weeks until the belt snapped during a critical pour, leaving the loader dead on site while an emergency air shipment was arranged. [NEED_CITE: thermal degradation patterns of EPDM drive belts in high-dust mobile equipment]

The cost of reactive purchasing extends far beyond the belt itself. Coolant temperature spikes from a slipping or broken fan belt stress the water pump seal, warp the thermostat housing, and can push cylinder head temperatures into the danger zone before the operator notices the gauge. On older Bobcat 773 and 5600 machines where cooling margins are already thin, that single failure cascades into a multi-component repair.

Positioning the Belt in the Machine’s Service Life

Every skid steer loader in a fleet ages differently depending on duty cycle, ambient conditions, and operator habits. The fan belt sits at the intersection of the cooling system and the accessory drive, meaning its condition directly affects engine temperature regulation and, indirectly, hydraulic oil cooling performance. Treating this Fan Belt service part for Bobcat Skid Steer Loader maintenance as a scheduled consumable—replaced at documented intervals rather than at failure—keeps the entire thermal management system within design parameters.

For rental companies turning machines between contractors, a belt swap during the inspection window prevents a renter from inheriting someone else’s deferred maintenance. Fleet owners running mixed Bobcat S150 through S205 models benefit from standardizing on a single replacement interval tied to engine hours, simplifying the parts room and reducing the chance that one machine slips past its service window.

Reading Wear Before the Belt Reads the Machine

Early belt degradation announces itself well before catastrophic failure if anyone is looking. Sidewall glazing, micro-cracking on the ribbed face, and frayed edges near the pulley contact zone all indicate advancing age. A belt that has lost tension will slip under load, producing a brief chirp on cold start that operators often dismiss. On Bobcat T180 and T190 track loaders working in abrasive environments, dust ingress between the belt and pulley grooves acts as a grinding compound, wearing the groove depth beyond the ±0.15 mm tolerance and accelerating slip. [NEED_CITE: belt wear inspection criteria for skid steer loader cooling systems]

Replacing the belt at the first reliable sign of degradation prevents the secondary damage that turns a simple swap into a cooling system overhaul. Water pump bearings, thermostat gaskets, and hose connections all suffer when the engine runs hot repeatedly. A fleet that tracks belt condition across machines builds a wear profile that makes replacement timing data-driven rather than guesswork.

Material and Construction for Hostile Environments

The EPDM rubber compound used in this belt resists ozone cracking and heat aging up to 120°C, which matters on machines where the engine bay temperature climbs steeply during sustained hydraulic work. Unlike older neoprene formulations, EPDM maintains flexibility through thousands of thermal cycles without hardening into the brittle state that causes sudden snap failures. The aramid-reinforced tensile cords provide dimensional stability under the alternating load pulses generated by the fan and water pump, resisting the stretch that causes tracking drift and premature pulley wear.

Groove depth tolerance held to ±0.15 mm ensures consistent contact with the pulley ribs across the full belt width, distributing load evenly rather than concentrating wear on the outer ribs. This precision matters most on high-output Bobcat S185 and S205 loaders where the fan draws significant horsepower and any slip translates directly into reduced cooling airflow.

The Cumulative Cost of Reactive Belt Purchasing

Fleets that buy fan belts only after failure accumulate hidden costs across every machine. Each unplanned stop means the loader sits idle while procurement confirms the correct part number, sources availability, and waits for delivery. On remote quarry sites or mining operations, that wait stretches from hours into days. The machine that should have moved material instead blocks the work face, and downstream equipment crews lose their scheduled task sequence. [NEED_CITE: unplanned downtime cost accumulation in mobile earthmoving fleets]

Beyond the idle time, reactive replacement often means the belt is ordered in a panic from whatever source has stock, without verification of compound specification or dimensional accuracy. A belt that fits the pulley but uses an inferior rubber compound will degrade faster, pulling the next failure forward and repeating the cycle. Fleets that commit to planned replacement with verified aftermarket supply break this loop and stabilize their maintenance budget.

Why Source This Belt Through XUNPO

Our production and qualified sourcing lines operate under a single warranty framework, so whether this Fan Belt service part for Bobcat Skid Steer Loader maintenance ships from our own facility or a certified partner, the QC standard and warranty terms remain identical. We stock across eight core categories, meaning a fleet service order can include belts, filters, seal kits, and undercarriage components in one consolidated dispatch rather than fragmented shipments from separate vendors.

Minimum order starts at one piece, supporting single-machine emergency needs without forcing bulk commitments, while fleet accounts can schedule quarterly replenishment against documented consumption rates. Our Guangzhou warehouse holds common items for fast dispatch, and our technical team verifies machine model compatibility against serial range data before confirming fitment. For older Bobcat 5600 and 773 loaders where OEM support has thinned, we maintain cross-reference verification covering superseded and alternate part numbers to keep these machines in service.

Documentation & Verification

• Commercial invoice and packing list referencing part number 6718730 and Bobcat model compatibility
• Cross-reference sheet listing interchange numbers (reference only) for Bobcat skid steer fan belt applications
• Dimensional inspection record confirming groove depth within ±0.15 mm tolerance before dispatch
• Warranty terms document covering 3–12 months against manufacturing defects
• Packing photographs showing individual retail box condition prior to container loading
• HS code and customs classification support for international belt shipments

Service Interval & Stocking Guidance

• Replace fan belt every 500–1,000 engine hours depending on dust exposure and ambient temperature conditions
• Inspect ribbed face and sidewalls monthly for glazing, cracking, or edge fraying on all Bobcat S150–S205 units
• Stock at least two belts per machine in remote fleet operations to cover one planned and one contingency replacement
• Store belts in original packaging away from direct sunlight, ozone sources, and temperatures exceeding 40°C
• Record belt replacement dates and machine hours to build fleet-specific wear trend data
• Verify pulley condition and alignment each time the belt is replaced to prevent premature wear on the new installation

Request a Fleet Maintenance Quote

Provide your Bobcat skid steer model list, current engine hour readings, and operating environment details so we can recommend replacement intervals and stocking quantities. For mixed fleets spanning S150 through T190 machines, share serial numbers to confirm variant-specific fitment before we build your consolidated supply plan.

Frequently Asked Questions

Q: How often should the fan belt be replaced on a Bobcat skid steer loader?
A: Replacement intervals depend on operating hours and environment. Machines in high-dust quarry or demolition service running 8–12 hour shifts typically need replacement sooner than units in lighter yard duty. We recommend documenting wear progression across your fleet to establish a machine-specific interval, then stocking accordingly so the next belt is always on the shelf before the current one reaches end of life.

Q: What signs indicate the fan belt needs replacing before scheduled service?
A: Look for sidewall glazing, micro-cracks on the ribbed surface, frayed edges near pulley contact points, and cold-start chirping that indicates tension loss. On Bobcat T180 and T190 track loaders working in abrasive conditions, dust buildup between belt and pulley accelerates wear. Any of these signs warrant immediate replacement to protect the water pump and thermostat from heat-related damage.

Q: Should the tensioner and water pump be checked when replacing the belt?
A: Yes. Every belt replacement is an opportunity to inspect the tensioner bearing for play or roughness and the water pump shaft seal for weeping. A worn tensioner will not maintain correct belt tension, causing the new belt to slip and wear prematurely. Addressing these adjacent components during the same service window prevents a second stop shortly after the first.

Q: How many spare belts should a fleet keep in stock?
A: A practical baseline is two belts per machine for remote operations—one for the next planned replacement and one for contingency. For centrally serviced fleets with reliable supply lines, one per machine may suffice. We can help calculate stocking levels based on your fleet size, duty cycles, and replenishment lead times to avoid both shortages and excess inventory.

Q: Is this belt still available for older Bobcat 773 and 5600 models?
A: Yes. We maintain cross-reference data for older Bobcat skid steer loaders and verify fitment against machine model and serial range. As OEM channel support for legacy models thins, our aftermarket supply with verified compatibility keeps these machines operational. Contact us with your specific model to confirm the correct belt specification before ordering.