Graco 287735 Carbon Brush Motor Brush Kit (2pcs) — Airless Paint Sprayer 395 / 495 / 595 / 695 / 795 / 1095 / Mark IV / Mark V / Ultra Max

Graco · Airless Sprayer DC Motor · Wear Part · Adjacent MRO Consumable

The Graco 287735 is a 2-piece carbon brush kit (one positive, one negative) for the DC drive motor inside Graco airless paint sprayer chassis — covering the 395 / 495 / 595 / 695 / 795 / 1095 series and the Mark IV / Mark V / Ultra Max platforms used in construction painting, industrial coating, shipyards, oil & gas pipeline maintenance, bridge & infrastructure refinishing and fleet refinishing. KOEED stocks this part as part of our adjacent-category MRO consumables program for B2B maintenance teams that already source Allen-Bradley PLC modules, Siemens SIMATIC controllers and Mitsubishi MELSEC spare parts from us — one supplier, one PO, one freight consolidation. Send the part list to Moritta@KOEED.COM for stock confirmation and a quote within 24 business hours.

Key Technical Specifications / Overview

Carbon brushes are the consumable interface between the stationary chassis wiring and the rotating DC armature of an airless paint sprayer motor. They wear continuously; once worn below the spring tension limit, the motor starts to spark, refuses to start under load, or runs intermittently. The 287735 kit ships in a sealed bag with two matched brushes pre-bedded to Graco's standard commutator geometry.

Application Scenarios / Where It Fits

The 287735 brush kit is consumed wherever a Graco airless sprayer is the workhorse for high-volume coating work. Although KOEED's main catalogue is industrial automation (PLC, HMI, servo, vision), maintenance teams routinely combine this part on the same PO with controller spares from Omron SYSMAC, Schneider Modicon, Yaskawa drives and Panasonic FP-series PLCs — because the painter, the conveyor, and the booth ventilation are all under the same plant engineer.

• Construction painting crews — high-rise, residential, commercial finish work using 395 / 495 / 595 portable units.
• Industrial coating lines — protective coatings on tanks, structural steel, and fabricated assemblies, often interlocked with Fanuc robotic spray cells.
• Shipyards and offshore yards — hull, deck, and superstructure painting where 695 / 795 / 1095 take long duty cycles.
• Oil & gas pipeline coating — field-applied protective coatings on pipe joints and risers.
• Bridge & infrastructure painting — long-span steelwork maintenance with Mark IV / Mark V platforms.
• Fleet refinishing / heavy equipment — yellow-iron, rail, and bus refinishing shops.
• Plant maintenance shops — same engineers who maintain Allen-Bradley ControlLogix racks also keep a sprayer or two for in-house touch-up.

Reorder cycles trend with paint season and project ramp-up. For multi-site operators, batching the 287735 with PLC and HMI spares for KEYENCE vision systems on the same shipment reduces inbound freight handling and customs entries.

Integration & Wiring Notes

Carbon brushes are passive mechanical components — there is no PLC logic, fieldbus interface, or firmware to configure. Integration is purely electromechanical, and the wiring notes apply to the host motor circuit rather than the brushes themselves.

If your booth automation layer uses controllers from the nine brands KOEED supports day-to-day, the sprayer's run-status signal is typically a clean dry contact you can wire to a digital input on any of them.

Installation & Commissioning Tips

1. Isolate and depressurise. Unplug the sprayer, set the prime / spray valve to PRIME, trigger the gun into a waste container until pressure is zero.
2. Remove the motor cover. Lift off the drive housing per the Graco service manual for your specific model (395 / 495 / 595 / 695 / 795 / 1095 or Mark IV / Mark V / Ultra Max).
3. Inspect the commutator. The copper segments should be a uniform brown-grey. Heavy black banding, scoring, or pitting means the armature itself may need attention — replacing brushes alone will not solve a damaged commutator.
4. Lift the old brushes. Unhook the brush spring, slide each brush out of its holder. Note the orientation: the curved face of each new brush must match the commutator radius.
5. Seat the new 287735 brushes. Install the matched positive and negative pair, route the leads clear of the rotating armature, reattach the spring tension.
6. Bedding-in run. After reassembly, run the sprayer dry (no fluid) for 60–120 seconds to bed the brush face to the commutator. Light sparking during the first minute is normal as the carbon conforms.
7. Function test. Prime with water or compatible solvent, run a short pattern test on cardboard, then commit to production work.
8. Log the change. Record the date, run-hour meter (if fitted), and operator in your CMMS — pair this with your normal automation maintenance log used for Allen-Bradley or Siemens module swaps.

If the motor still sparks after a fresh brush set and a proper bedding-in run, suspect the armature, the field winding, or the speed-control board — not the brushes. Email Moritta@KOEED.COM with photos of the commutator and we will help triage and quote whatever upstream consumable is also required.

Procurement, Warranty & Lead Time

KOEED handles the Graco 287735 as part of its adjacent-category MRO programme. We are not a Graco authorised dealer or OEM subsidiary — we are an independent multi-brand sourcing channel that consolidates this construction / fluid-handling consumable on the same PO and shipment as your industrial automation spares.