4800 Camper Jack

The innovative, heavy-duty 4800 Jack by HappiJac combines customer feedback, research and rigorous testing to provide a stronger, safer jack with an impressive 2,800-pound load rating. Ideal for multi-slide truck campers, the 4800 Jack boasts robust strength, stability and efficiency with a self-lubricating bronze nut, a polished screw and a large Torrington thrust bearing. Three extra inches of length yield maximum clearance and significantly improves lateral and structural support.

Happijac 4800-HD Camper Jacks;
  • • 2800-pound load rating ideal for multi-slide truck campers
  • • 36.5” lift combined with 51” outer tube offers maximum clearance
  • • Plated and powder-coated outer tube resists corrosion
  • • Easy-to- access manual override with full 360-degree cranking
  • • Efficient, precision CAD design sustains quiet operation
  • • Field serviceable with east access to all components
  • • Upgradeable to electric
  • • Made in the U.S.A.
  • • Low amp draw

Happijac Camper Jack Model Comparison


Prod. No.



Elec. Upgrade

Acme Screw Jack


1500 lbs dynamic load

34.5 "


Ball Screw Jack


1900 lbs dynamic load

34.5 "


Quick Release Ball Screw Jack


1900 lbs dynamic load

34.5 "


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

4150 Acme Screw Jacks


  • - 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

  • - 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

slide-out-bannerHappiJac Secure-Trac™ Fixed Frame slide mechanisms are idea for above-floor applications and its ultra-low profile maximizes living and storage space. A unique captured track delivers smooth, stable, no-play operation. The concise Secure-Trac™ slides design eliminates heavy linkages, drive mechanisms and other components, keeping down tongue weights. Best of all, these floor-mounted slide mechanisms are factory assembled with a pre-squared frame and quick timing adjustment for easy installation and alignment. HappiJac Secure-Trac™ Fixed Frame slides are available in single or dual rail configurations and come in multiple frame depths and rail lengths.

Click here to download and read our user manual


  Sofa Slides
  Bedroom Slides
  Dinette Slides
  Wardrobe Slides
  Room Slides

  Standard Features

  40-50 pounds dual
  25-30 pounds single
  Easy installation
  Low profile
  Smooth operation
  Unique captured track design
  Easy alignment adjustment
  Direct drive motor
  Standard components
  Dimpled rail track

Ultra Low Space Saving Profile

HappiJac’s innovative Secure-Trac™ slides are virtually invisible to RV owners because we’ve reduced moving parts and drive linkage and developed a tightly integrated rail and track. Manufacturers are no longer bound by conventional space restraints and can focus more on the customers’ needs rather than on hiding large and cumbersome mechanisms. The ultra-low profile allows for more options like a flush-floor look, substantial storage space or an additional bed.

Quick and easy installation and alignment
HappiJac Secure-Trac™ Fixed Frame slides feature a pre-squared frame design that makes installation and alignment simple, fast and trouble-free. Simply attach the motor (if using electric), align the factory assembled slide mechanism with the outer wall, bolt the frame to the floor and synchronize the drive rails using HappiJac's unique timing adjustment feature. The timing adjustment feature eliminates the tedious synchronization of drive rails during installation. Simply pull back on the spring-loaded drive shaft to disengage it from the drive mechanism and adjust (1/8 inch or .32 centimeter per tooth. This allows installers to easily match timing to the neighboring track base for a tight seal with the outer wall.
Room Slide configuration options
Frame width options
(Dual ram configurations only)

HappiJac Secure-Trac Fixed Frame Slides are available in a single or dual ram configuration with nearly any combinations of frame depths, widths and rail length. Our experienced product engineers will work with you to determine the ideal configuration for your weight bearing, surface area, and budget requirements. HappiJac Room Slide track bases are also available in ready-to-install tandem drive frames for dual ram configurations. These frames feature Secure-Trac Drive bases and come pre-squared from the factory for quick installation. They also include a standard drive ram cross member for fast squaring and mounting.
Frame depth options

Rail length options


Not pictured: 36"

HappiJac Room Slide track bases are the only slide solution in the industry featuring Secure-Trac's exclusive capture track design. They come in three standard depths to provide optimal support for a wide range of mobile surface areas and weight requirements. These track bases come ready to attach to the RV sub-floor. Standard depths are 12 inches, 16.75 inches and 22 inches. HappiJac Room slide rails feature a standard dimpled drive track which interchangeably fit HappiJac's exclusive captured track design. These rails offer maximum structural support and eliminate to outside air and elements. Standard rails are available in 30.25 inches, 36 inches, 40.75 inches and 42.5 inches.

JacksBanner1For more than 50 years HappiJac has been producing high quality products for the RV industry. HappiJac conducts extensive research and testing to develop quality products backed by sound engineering. HappiJac has reinvented the camper jack and revolutionized the industry with the first comprehensive and fully upgradeable line of camper jacks. Click here to see our Model Comparisons.


Safety First
HappiJac's Acme Screw Jack is the first acme screw jack with a redundant safety check system. By providing an additional safety nut, HappiJac's Acme Screw Jack protects against mishap in the event of failure. Its unique concave (cupped) footpad reduces movement and provides greater stability than large, convex footpads.

Optimum Performance
HappiJac's Acme Screw Jack features a polished steel screw and a self-lubricating, friction-reducing nut. It provides more than 34.5 inches of lift and easily and efficiently raises and lowers a camper.

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Strong and Appealing
Each HappiJac Camper Jack features attractive 2-inch square tubing that provides significantly more strength than round tubing. The HappiJac Acme Screw Jack can lift 1500 pounds and the HappiJac Ball Screw Jack can lift 1900 pounds. Each HappiJac Camper Jack is powder coated on the inner and outer tubes to protect against rust and improve appearance.

Easy Installation
Each HappiJac camper jack uses the same universal Z-bracket mounting system. The strong and secure Z-bracket mounting system can be installed and/or retrofitted on most campers. For dual-wheel pickup trucks, the optional swing-out bracket is easily installed and provides additional clearance needed for easy loading and unloading.

Electric Upgrade Ability
The Acme (4150), Ball-Screw (4500) and Ball-Screw with quick-release leg jacks (4600) can easily be upgraded into a wireless remote-controlled electric jack system with the purchase and installation of a HappiJac motor (600700) and wiring kit (600730).

Installation and Maintenance Guides
Below is a complete listing of Happijac camper jack installation and maintenance guides.



ACME Screw jack installation and owner's guide

4500, 4600

Ball Screw jack installation and owner's guide

600700, 600730

Electric jack upgrade option


10-Key Remote

10 Key Wired Remote Operation Manual

10-Key Remote

10 Key Wireless Remote Operation Manual

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HappiJac Power Bed Lifts literally go where no slide has gone before. As traditional slide-outs extend horizontally, this innovative product leverages vertical space to maximize the space and versatility of fifth-wheel RVs and toy haulers. It features quick timing adjustment and pre-assembled frame units. A powerful direct drive motor and patented self-contained track provide stability at any height at the flip of a switch.

lift-banner-seriesEasy Operation

The HappiJac Power Bed Lift can easily be operated by one person. Simply activate the switch to raise or lower the bed to any desired height. That’s it! There are no pins or components to manipulate, lock into place, set up or store.

Maximum Utilization of Space

The HappiJac Power Bed Lift effectively maximizes existing vertical space, providing room for additional storage or sleeping/sitting area.

bedlift1 Bedliftpic2

Application Options
Bunk Bed Option

HappiJac’s Power Bed Lift supports up to two queen size beds in an innovative, patented double bunk bed configuration. Beds can be raised out of the way to make room for ATVs or other equipment and lowered again when needed.

Sofa Option

HappiJac’s Power Lift can accommodate one reversible sofa or a sofa-single bunk combination.

Solid Power and Support

A quiet heavy-duty motor and tightly integrated lift mechanism provide secure support at any height. Users can easily set the bed to a height that suits them best and will not need to climb, crouch or stoop getting out of bed in the morning.


Document Resource


Wiring Diagram

Power Bed Lift Wiring Diagram
(Plug and Play)

Wiring Diagram

Power Bed Lift Wiring Diagram
(Pre-Plug and Play)

Blocking Schematic

Power Bed Lift Blocking Schematic

Owners Manual

Power Bed Lift Owners Manual

Manual Override

Power Bed Lift Manual Overide instruction

Looking for replacement parts? Buy them now at the LCI webstore!