4” I-BEAM — TROLLEY X678 Chain — Vertical Hole — 7 7/16” (188.9) Drop

The Frost 4″ I-beam trolley carries X678 chain at a 7 7/16″ (188.9 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, 4 use retainer wheels and 8 use full ball complement wheels, in open, welsh plug only, shield only, Splashproof®, Splashproof® with wiper seal or contact lip seal configurations, with nitrile or Viton seal options.

Parts that go with it

• Chain: X678 Smooth Link® chain
• Bolt and lock nut: Grade 5, part 0041193, for 4″ forged vertical brackets (specs)
• Attachments made for 4″ trolleys: “C”, “H”, “I”, “H” horizontal hole, “B”, 4″ 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.