AI parts search for industrial & MRO stores

“The drive belt on my exhaust blower is glazed and squealing on startup and cracked on the inner ribs — a V-belt about 21/32″ wide and roughly 78″ around the outside. What do I replace it with?”

That glazing and edge-cracking means the belt has lost its grip and is slipping in the sheave, which is what makes the squeal and the heat. A 21/32″ top width and ~78″ outside length is a standard B-section belt — the Gates Hi-Power II B75 drops right in. It’s the workhorse wrapped V-belt for HVAC blowers, pumps, and general industrial drives.

→ Recommended: Gates Hi-Power II V-Belt, B75 · $21.09

“My conveyor idler is running hot and making a gritty, growling noise when it spins. The old sealed ball bearing measures 25 mm on the shaft, 52 mm outside, 15 mm wide. What’s the replacement?”

Growling plus heat on a sealed ball bearing means the grease is spent and the balls are spalling the races — it’s on its way out. A 25×52×15 mm rubber-sealed deep-groove bearing is the ubiquitous “6205-2RS” size found on motors, pumps, and conveyor rolls. SKF’s 6205-2RS1 (current designation 6205-2RSH) is the double-sealed, factory-greased fit.

→ Recommended: SKF Deep Groove Ball Bearing, sealed, 25×52×15 mm · $24.08

“My Parker hydraulic cylinder is weeping oil past the rod every time it extends, and pressure bleeds down when it’s parked — it’s a tie-rod cylinder with a 2-inch rod. What seals do I need to reseal it?”

Oil tracking out on the rod and slow drift under load are the classic signs of a worn rod seal and wiper letting fluid past. Parker’s 2A/2H/3L/VH series uses a matched rod gland and seal kit sized to the rod diameter, so a 2″ rod takes the RG2AHL0201 set. Rebuilding with the correct Parker kit restores the seal geometry instead of chasing a leak with a mismatched O-ring.

→ Recommended: Parker Rod Gland & Seal Kit — 2A/2H/3L/VH, 2″ rod · $210.59

“My SMC compact air cylinder is getting weak and hissing air out the end even when it’s not moving — it’s the 32 mm bore compact type. Is there a rebuild kit instead of a whole new cylinder?”

A hiss with the cylinder idle plus lost pushing force means the piston seal and rod seal have hardened and are bypassing air. SMC sells a bore-specific seal kit for the CQ2 compact series so you replace the elastomers instead of scrapping the body. The CQ2B32-PS kit carries the NBR piston seal, rod seal, and gasket for the 32 mm bore.

→ Recommended: SMC CQ2 Compact Cylinder Seal Kit, 32 mm bore · $13.43

“My condenser fan motor hums but won’t spin up, and the compressor tries to start then trips. The round metal capacitor on top is bulged and reads 45 and 5 microfarad, 440 volt. What do I put in?”

A humming motor that won’t spin plus a domed can is a failed run capacitor — the compressor and fan aren’t getting their phase-shift boost, so they stall. A 45/5 MFD dual-rated round capacitor at 440/370V is the exact replacement for that two-motor setup. The Titan Pro TRCFD455 is a common, in-stock match.

→ Recommended: Titan Pro Dual Run Capacitor, 45/5 MFD, 440/370V · $8.24

“There’s a clunk and backlash between my motor and pump on every start and stop, with crumbs of rubber around the coupling — a Lovejoy L-type jaw coupling, hubs about 2-1/8″ across the jaws. What insert do I need?”

The clunk on start/stop and the rubber crumbs mean the spider (the elastomer center) is chewed up, so the metal jaws are hammering each other — replace the spider before the hubs wear. On an L090/L095 Lovejoy coupling that insert is the 8-legged SOX (NBR) solid-center spider. Swapping just the spider restores the cushion without pulling the hubs off the shafts.

→ Recommended: Lovejoy L090/L095 SOX Jaw Coupling Spider, NBR · $13.47