Happijac Camper Jack Model Comparison

Product

Prod. No.

Capacity/unit

Lift

Elec. Upgrade

Acme Screw Jack

4150

1500 lbs dynamic load

34.5 "

Yes

Ball Screw Jack

4500

1900 lbs dynamic load

34.5 "

Yes

Quick Release Ball Screw Jack

4600

1900 lbs dynamic load

34.5 "

Yes

capacity rated according to ANSI standard for dynamic (moving) load

4150 Acme Screw Jacks

JackModelcompare1

  • - Efficient, polished, steel screw resists rust
  • - User-friendly crank
  • - Self-lubricating nut
  • - The only jack with a redundant safety check system
  • - Universal Z-bracket mounting system
  • - Strong 2-inch square tubing with ¼-inch reinforced strap
  • - Durable powder coat paint
  • - A full inch of travel with only six turns
  • - Quality, precision construction
  • - Concave footpad design for greater stability and minimum stress
  • - 1500-pound load lift capacity per jack
  • - No grease line as gear mechanism is internal
  • - Friction reducing alignment guides on both inner and outer tubes
  • - 34.5 inches of lift
  • - Electrical upgrade option
4500 and 4600 Ball Screw Jacks

JackModelcompare2
  • - Efficient, polished black oxidized alloy steel screw
  • - User-friendly crank
  • - 144 hardened chrome molly steel ball bearings
  • - Dual ball bearing circuits provide a redundant safety check system
  • - Universal Z-bracket mounting system
  • - Strong 2-inch square tubing
  • - Durable powder coat paint
  • - A full inch of travel with only five turns
  • - Quality, precision construction
  • - Concave footpad design for greater stability and minimum
  • - Slim, appearance enhancing, "Happijac look"
  • - 1900-pound load lift capacity per jack
  • - No grease line as gear mechanism is internal
  • - Friction reducing alignment guides on both inner and outer tubes
  • - 34.5 inches of lift
  • - Electrical upgrade option
  • - Quick release leg (4600 only) drops leg into ready-to-lift position in seconds