The Bobcat B511 takes the 0.011” orifice of the B411 and opens the spray angle to 50°, producing a 10” pattern — 2” wider per pass than the B411 at the same ~13 oz/min fluid delivery. It’s built for operations running fine lacquers, enamels, or waterborne topcoats on flat panels and wider surfaces where the 8” B411 fan is a throughput limitation rather than a precision benefit.

The 0.011” orifice maintains controlled fluid delivery for fine finishes — thin enough for quality lacquers and waterborne topcoats, with the 50° angle spreading coverage over 10” per pass. Cabinet doors, flat furniture panels, wide wood components, and metal panels where fine finish quality is the standard and production rate matters are the typical applications.

The choice between B511 and B411 is purely geometric — same orifice, same fluid delivery, same pressure requirements, same 6 CFM air draw. Choose B511 when your substrate is wide enough that the extra 2” per pass is an efficiency gain. Stay with B411 for components and narrower work. Tips are field-replaceable, so you can keep both on hand.

Fluid Tip

36-511

0.011” orifice · 50° angle · ~10” pattern

Same 0.011” orifice as the B411 at a wider 50° angle — ~13 oz/min at 1000 PSI with 10” coverage for fine lacquers and waterborne topcoats on flat panels. Field-replaceable tip.

Air Cap

26-101

AAA HVLP air cap · ≤18 PSI at handle

Same air cap as all Bobcat configurations. The 50° tip geometry controls fan width; the air cap refines atomization independently. No adjustment needed when switching between B411 and B511 on the same material.

Gun Type

AAA

Air Assist Airless · 1500 PSI max

Requires AAA pump (e.g., Peak 14:1). At 0.011”, fine lacquers and waterborne coatings atomize well at 500–800 PSI. The angle change from B411 to B511 does not affect pressure requirements.

Repair Kits

What is the difference between B511 and B411?

Identical 0.011” orifice and ~13 oz/min fluid delivery. The only difference is fan width: B411 uses 40° for an 8” pattern — better for components, narrower panels, and profiles. B511 uses 50° for a 10” pattern — better for flat panels and wider surfaces where the extra 2” per pass is an efficiency gain. No pressure adjustment needed when switching on the same material.

Does changing from 40° to 50° change fluid delivery?

No — fluid delivery is controlled entirely by orifice size and fluid pressure. Both B411 and B511 deliver the same ~13 oz/min at 1000 PSI. The 50° angle only changes the fan geometry — it spreads the same volume of material over a wider pattern, which is more efficient on flat surfaces but produces the same amount of material per unit time.

Should I keep B511 and B411 on hand at the same time?

Many operations do exactly this. If your production includes both flat panel runs and narrower component or profile work, keeping both the 36-511 (10” fan) and the 36-411 (8” fan) on hand lets you swap tips in seconds between job types. Tips are field-replaceable and use the same gun body, air cap, and pressure settings.

What if I need 0.011” with a 12” or 14” fan?

The B611 uses 0.011” at 60° for a 12” fan, and the B711 uses 0.011” at 70° for a 14” fan. All three deliver the same ~13 oz/min — choose the angle for your substrate width. Call or text 586-210-0555 to confirm.

What repair kit does the Bobcat use?

10-137 covers routine maintenance — all o-rings and the seat. 10-138 is the complete kit adding the air valve assembly and needle seal cartridge. CET stocks both for same-day shipment. Most in-stock orders ship same day — stocked at C.A. Technologies’ Colorado facility.

Where can I find the Bobcat parts manual?

The full parts manual with exploded diagram, tip flow chart, and all replacement part numbers is available via the download button below. CET includes documentation with every order.