3” I-BEAM — TROLLEY X348 Chain — Vertical Hole — 5 1/2” (139.7) Drop

The Frost 3″ I-beam trolley carries X348 chain at a 5 1/2″ (139.7 mm) drop, measured from the top of the I-beam to the chain centerline. It has a forged bracket with swaged wheels and vertical attachment holes.

Of its 12 part numbers, 6 use retainer wheels and 6 use full ball complement wheels, in open, welsh plug only, shield only, triple labyrinth, Splashproof® or contact lip seal configurations, with nitrile or Viton seal options.

Parts that go with it

• Chain: X348 Smooth Link® chain
• Bolt and lock nut: Grade 5, part 0031175, for 3″ forged and stamped brackets (specs)
• Attachments made for 3″ trolleys: “C”, “H”, “I”, “B”, “F” chain clip, 3″ load bar

Retainer wheels are rated to 325°F for transportation lines; full ball complement wheels to 500°F for process lines like ovens, washers and paint. Identifying a trolley on your line? Use our trolley drop guide and wheel configuration guide, or send a photo and our team will match it.