Atlas® RJ45A 4,500 lb Air/Hyd Bridge Jack #ATEXH-RJ45A-FPD

Atlas RJ45A — 4,500 lb Air/Hydraulic Bridge Jack

Most four-post work never needs 8,000 pounds of bridge jack — it needs the axle 18 inches in the air and the space back when it's done. The Atlas RJ45A is the compact answer: a 4,500 lb air/hydraulic bridge jack with a low-profile build, smooth rolling action on the runway tracks, and a 4-piece truck adapter set in the box.

Roller arms adjust from 36 to 54 inches, lift arms reach pads 30 to 60 1/2 inches apart, and multiple safety lock positions hold the load — the same air/hydraulic recipe as the big jacks, sized for the work most bays actually do.

Who the Atlas RJ45A Is Built For

• Atlas 4-post owners whose daily work is cars, SUVs, and light trucks — 4,500 lbs covers the axles a passenger-vehicle shop lifts, at a lighter, lower-profile jack.
• Bays where the jack needs to disappear between jobs — the compact low-profile build rolls out of the way and stores below the runway line.
• Shops with 36"–54" runway gaps — the roller arm range spans it; measure the gap and the fit is known before ordering.
• Techs who want smooth, not stomped — the roller action rolls the jack along the tracks, and the scissor mechanism lifts level.
• Shops already running 70–115 PSI shop air — the air/hydraulic operation uses it (external supply required, not included).

What the Atlas RJ45A Is NOT Built For

This is not the heavy-duty play — 3/4-ton and 1-ton axle work belongs to the 8,000 lb RJ8BKAH. It's not for two-post lifts (bridge jacks ride 4-post runway tracks), not for runway gaps outside the 36"–54" roller range, and not for shops without compressed air.

Compatibility note: measure the distance between your runways (roller arms span 36"–54"), confirm 4,500 lb capacity against your axles, and verify 70–115 PSI shop air before purchase. Questions on fit? Call (817) 865-3707 before ordering — we confirm compatibility, not guesses.

What Makes the Atlas RJ45A Different

Compact and low profile

The RJ45A's build is the point — it rolls out of sight under the runways and comes back for the brake job.

• Low-profile compact design
• Smooth rolling action
• 4-piece truck adapter set included

Air/hydraulic, sized for real work

70–115 PSI shop air drives a scissor mechanism that lifts level and locks on multiple safety positions.

Fits the passenger-vehicle duty class

Roller arms 36"–54"; lift arms reach pads 30"–60 1/2" apart; 4,500 lbs of capacity for the axles a car and light-truck shop actually lifts.

Best For

• Car / light-truck 4-post owners
• Compact storage between jobs
• Bays with shop air
• Passenger-vehicle duty class

Not Ideal For

• 3/4–1 ton axle work (see RJ8BKAH)
• 2-post lifts
• Shops without compressed air

Atlas RJ45A vs Atlas RJ8BKAH

Same air/hydraulic recipe, two duty classes — the axle weight decides which jack is honest for your bay.

Full Specifications - Atlas RJ45A

Atlas® Automotive Equipment Warranty - Atlas RJ45A

Atlas covers its bridge jacks with a one-year parts warranty, handled through Alamo.

Warranty service is coordinated through Alamo Equipment & Service — call (817) 865-3707 and we help get the issue moving.

Warranty terms can change. Confirm exact coverage at the time of purchase. Warranty can be void if the lift is installed improperly or not anchored per spec.