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Bulldog
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Always the correct part
We know our products
Quality Products
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Strong, durable, and sturdy, the BULLDOG 12,000 lbs. support capacity square jack is the BIG reason why BULLDOG has carried the load in agricultural, construction, heavy-duty utility, and horse/livestock trailer industries since 1923. All BULLDOG 4" square jacks are rated for 12,000 lbs. support capacity and 10,000 lbs. lift capacity. The strength of the product, plus the wide variety of styles, makes this jack the best choice in its product class.
| BRAND: | BULLDOG |
| PART NUMBER: | 182500 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 47 LBS |
| CAPACITY: | 12,000 LBS. |
| TRAVEL: | 12.5 IN. |
| RETRACTED: | 27 IN. |
| EXTENDED: | 39.5 IN. |
| MODEL NUMBER: | SWQ 180 FL-B |
| HANDLE STYLE: | SIDEWIND |
| ATTACHED WHEELS: | NO |
| MATERIAL: | STEEL |
| SPEEDY LIFT: | NO |
| COLOR: | GRAY |
Founded in 1920, Bulldog has become the standard for heavy-duty trailer connection hardware in agricultural, military and utility service. The line covers gooseneck hitches and couplers, A-frame and channel-mount trailer couplers with the Wedge-Latch mechanism, and heavy-duty jacks, built for unmatched strength, reliability and safety under demanding loads.
Bulldog was founded in 1920 and has spent more than a century supplying the connection hardware that heavy trailers depend on. Its market has always been the demanding end: agricultural, military and utility applications where a coupler failure is not an inconvenience but a serious incident. The brand summarises its position as Tough and Tested, and it sits within the Horizon Global towing group alongside Reese, Draw-Tite, Fulton, Tekonsha, Bargman and Wesbar.
Gooseneck equipment is the brand's signature. Gooseneck hitches mount in the truck bed over the rear axle, which places the load where the chassis can carry it properly and allows far tighter turning than a receiver hitch permits. Matching gooseneck couplers attach at the trailer end, in round tube and square configurations across the capacity range used by livestock, equipment and flatbed trailers.
The conventional trailer coupler range is built around the Wedge-Latch mechanism, which uses a wedge to take up wear between coupler and ball rather than relying on a fixed clamp that loosens over time. That matters on a trailer accumulating hard miles, where slack in the coupling shows up as noise and shock loading. Couplers are offered in A-frame form for standard tongues and in channel-mount form for straight tongue and fabricated frames, with adjustable channel versions that let a coupler be positioned to suit the tongue height.
Heavy-duty jacks complete the line, sized for the tongue weights that gooseneck and equipment trailers generate. Across the range the emphasis is consistent: forged and heavy-section components, load ratings backed by testing, and hardware specified for agricultural, military and heavy-duty commercial use rather than occasional recreational towing.
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How to Maintain Your BULLDOG® Square Tube Jack
The jack is rated for 12,000 lb, but the actual capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Check the stamped markings or decals on the product for the rated capacity. If uncertain, contact Cequent Performance Products at 1-800-521-0510 or www.cequentgroup.com.
The jack has a 2-speed shift pattern where the handle moves 5/8″–3/4″ while shifting. High gear is engaged when the shaft is pushed in; low gear is engaged when the shaft is pulled out. This clearance must be accounted for during installation.
These jacks are designed for mounting to flat surfaces only. Before mounting, confirm there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in all positions including handle swing (in both gears) and swivel positions if applicable.
The jack handle moves 5/8″–3/4″ while shifting between gears. Before installing, check for interference in all positions including handle swing in both gears and swivel positions if applicable. Check for interference again after installation is complete to ensure no contact with the tow vehicle, tongue, ground, or other mounted accessories.
All welding must be performed by an AWS (American Welding Society) certified welder. This applies to both direct-mount and pivot tube mounting installations.
1) All welding must be performed by an AWS certified welder. 2) Place the jack at the desired location. 3) Place three 2″ long 1/4″ fillet welds on both sides of the jack along the contacting surface. The welds should be as far apart as possible to maximize strength under load. If mounting in a tandem application, align the jacks carefully so they raise and lower together and share the load equally.
1) All welding must be performed by an AWS certified welder. 2) The non-beveled side of the pivot tube is welded to the tongue. 3) Place the weld-on pivot tube against the tongue and weld all around with a 1/4″ fillet weld. 4) Align one set of pivot mount holes vertically. 5) Mate the jack to the pivot tube and secure with the supplied pin.
A 1/4″ fillet weld is required. For direct mount, three 2″ long 1/4″ fillet welds must be placed on both sides of the jack along the contacting surface, spaced as far apart as possible to maximize strength under load. For pivot tube mounting, weld all around the pivot tube with a 1/4″ fillet weld.
Fully retract and/or rotate the jack before towing. This prevents interference with the road and ensures safe towing.
The drop leg pin is a safety device that must be fully inserted before using the jack. When using the drop leg, make certain the drop leg pin is fully inserted before using the jack. If the product has a pivot tube mount, make certain the pivot pin is fully inserted through both sides of the pivot tube and the pivot mount.
Never position any part of your body under the product or the load being supported. Never exceed the maximum rated capacity. These jacks are designed for vertical loading only; excessive side forces may cause jack failure and must be avoided. Do not allow children to play on or around the product or load. Secure the load, vehicle, and trailer from rolling by blocking wheels when operating the jack or coupling the trailer. Always replace bent, broken, or worn parts before using the product.
Keep clear of the pinch point at the drop leg pin. The drop leg will naturally drop or retract very quickly depending on the model. For spring return models, place your foot on the foot plate to control the return. For non-spring return models, grasp the handle of the foot plate to control the fall. Never attempt to adjust the drop leg when the jack is under load.
Keep clear of the pinch point at the drop leg pin and the holes in the drop leg. The drop leg will naturally drop or retract very quickly depending on the model, which can cause pinching or crushing injuries.
No. Never attempt to adjust the drop leg when the jack is under load. Always verify that the jack is not supporting any load before adjusting the drop leg.
If you see clearance between the drop leg pin and housing, the pin is not fully seated. You must adjust the drop leg to fully seat the pin into the hole location. You may need to lubricate the drop leg pin assembly. If you are unable to fully seat the pin, do not use the jack.
Maintenance procedures should be performed at least annually. This includes lubricating the gears, bushings, screw, input shaft bushings, and drop leg pin and spring.
The gears, bushings, and screw must be kept lubricated. For side-wind models, apply a small amount of automotive grease with a grease gun at the lubrication points on the side of the jack near the input shaft, then rotate the jack handle to distribute evenly. A lightweight oil must be applied to the input shaft bushings at both sides of the jack or gearbox. For top-wind models, the screw-stem should be lubricated with lightweight oil. If equipped, the drop leg pin and spring must be kept clean and lubricated with lightweight oil.
Use automotive grease (applied with a grease gun) for the gears, bushings, and screw on side-wind models. Use lightweight oil for the input shaft bushings, the screw-stem on top-wind models, and the drop leg pin and spring.
For side-wind models, the lubrication points are found on the side of the jack near the input shaft. The input shaft bushings are located at both sides of the jack or gearbox. If equipped, the drop leg pin and spring also require lubrication.
The jack mounts to flat surfaces on trailer tongues using either direct weld-on or pivot tube mounting. Before installation, confirm there will be no interference from the tow vehicle, tongue, ground, or other accessories in all positions including handle swing and swivel. Contact Cequent Performance Products at 1-800-521-0510 if you need fitment confirmation.
Yes. All welding must be performed by an AWS (American Welding Society) certified welder. This is required for both direct-mount and pivot tube mounting.
A 1/4″ fillet weld is required. For direct mount, place three 2″ long 1/4″ fillet welds on both sides of the jack. For pivot tube mounting, weld all around the pivot tube with a 1/4″ fillet weld.
The jack is rated for 12,000 lb, but capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Never exceed the maximum rated capacity. Check the stamped markings or decals on the product for the actual rated capacity.
Fully retract and/or rotate the jack before towing. Ensure the drop leg pin is fully inserted before using the jack.
Perform maintenance at least annually. Apply automotive grease to side-wind model lubrication points near the input shaft, lightweight oil to input shaft bushings and drop leg pin, and lightweight oil to the screw-stem on top-wind models.
If you see clearance between the drop leg pin and housing, the pin is not fully seated. First, try to lubricate the drop leg pin assembly as described in the maintenance section. Adjust the drop leg to fully seat the pin into the hole location. If you are still unable to fully seat the pin, do not use the jack.
| Part Number | Model Number | Description | Support Capacity (lbs.) | Lift Capacity (lbs.) | Handle Style | Travel (in.) | A Retracted (in.) | B Extended (in.) |
|---|---|---|---|---|---|---|---|---|
| 182800 | SWQ 180 DL-B-SR | Drop Leg Pull Pin to the SIDE, Crank Sold Separately | 12,000 | 10,000 | Sidewind | 12.50 | 27.40 | 53.60 |
| 182804 | SWQ 180 DL-BC-SR | Drop Leg Pull Pin to the SIDE, Includes Crank | 12,000 | 10,000 | Sidewind | 12.50 | 27.40 | 53.60 |
| 182805 | SWQ 180 DL-BX RH | Drop Leg Pull Pin to the SIDE, Crank Sold Separately Companion Jack to 182800, 182802, and 182804 | 12,000 | 10,000 | Sidewind | 12.50 | 27.40 | 53.50 |
| 182815 | SWQ 180 DL-BX | Drop Leg Pull Pin to the FRONT, Crank Sold Separately | 12,000 | 10,000 | Sidewind | 12.50 | 28.60 | 54.60 |
| 182300 | TWQ 180 DL-B | Crank Sold Separately | 12,000 | 10,000 | Topwind | 12.50 | 23.40 | 49.40 |
| 182304 | TWQ 180 DL-BC | Crank Included | 12,000 | 10,000 | Topwind | 12.50 | 23.40 | 49.40 |
| 182400 | SWQ 180 DL-B | Drop Leg Pull Pin to the SIDE, Crank Sold Separately | 12,000 | 10,000 | Sidewind | 12.50 | 27.40 | 53.30 |
| 182404 | SWQ 180 DL-BC | Drop Leg Pull Pin to the SIDE, Crank Included | 12,000 | 10,000 | Sidewind | 12.50 | 27.40 | 53.30 |
| 182411 | SWQ 180 DL-B | Drop Leg Pull Pin to the SIDE, Crank Sold Separately, Companion Jack to 182400 and 182404 | 12,000 | 10,000 | Sidewind | 12.50 | 27.40 | 53.50 |
| 182415 | SWQ 180 DL-BX | Drop Leg Pull Pin to the FRONT, Crank Sold Separately | 12,000 | 10,000 | Sidewind | 12.50 | 28.60 | 54.60 |
| 182500 | SWQ 180 FL-B | Fixed Leg Jack with Standard Disc Foot, Crank Sold Separately | 12,000 | 10,000 | Sidewind | 12.50 | 27.00 | 39.50 |
| 182524 | SWQ 180 TS-FL-BCX | Fixed Leg Jack with Standard Disc Foot, Crank Included, Mating Mount not Included, (use #005122) | 12,000 | 10,000 | Sidewind | 12.50 | 17.00 | 29.60 |
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