Thieman SL Series
The Thieman SL Sideloader Liftgate is engineered for strength, safety, and side-loading convenience.
Perfect for beverage trucks and route deliveries, this rugged Thieman liftgate offers versatile configurations with lifting capacities of 1,500–2,000 lbs.
Ideal for fleets that need reliable, high-cycle tailgates.

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Thieman SL Sideloader Liftgate: Durability and Efficiency for Demanding Delivery Routes
All about Thieman SL Series Liftgate
The Thieman SL Sideloader Liftgate is a proven workhorse designed for high-cycle, side-loading operations—ideal for beverage distribution, route delivery, and applications requiring rapid, street-side unloading. As part of the trusted line of Thieman liftgates, the SL series offers rugged construction, flexible platform sizes, and smooth hydraulic operation to meet the demands of real-world logistics.
Built for Side-Loading Efficiency
Unlike conventional rear tailgates, sideloader liftgates mount to the side of the truck body, allowing workers to unload directly to sidewalks or curbs without repositioning the vehicle. This sideloader design is not only time-saving but also improves delivery safety in busy urban environments.
With lifting capacities ranging from 1,500 lbs to 2,000 lbs, the Thieman SL models provide ample support for palletized loads, kegs, crates, and route equipment. It’s the sideloader liftgate of choice for companies that value efficiency and safety.
Models and Configurations
Available in models like the SL-15EST and SL-20EST, the SL series offers two platform widths (6 ft and 10 ft) and a choice between steel and aluminum platforms. The EST model’s adjustable outboard rail design ensures a stable lift across varied terrain, while the cam-style lock and safety latches prevent accidental drops during travel.
Hydraulic lift cylinders power the platform up and down, while electric motors drive operation from either side of the truck, depending on the configuration. Installation manuals detail left- and right-side mounting procedures, ensuring fit across truck makes and body lengths.
Features at a Glance
- Lift capacity: 1,500 – 2,000 lbs
- Platform options: 72” x 24” or 120” x 24” usable steel/aluminum
- Mounting: Sideloader (left or right side)
- Hydraulic system: Dual lift cylinders for balanced load lifting
- Control: Electric toggle switch, with optional hand-held remote
- Safety: Cam locks, flow restrictors, and travel lock pins
Built to Last, Backed by Thieman
Manufactured in the USA, Thieman tailgates like the SL series are known for dependability and minimal maintenance requirements. The SL Sideloader’s heavy-duty steel tubing, reinforced base frame, and zinc-plated pins ensure durability even in corrosive delivery conditions.
All Thieman liftgates include comprehensive operator manuals and safety guides. With over 60 years of liftgate innovation, Thieman continues to lead the way in hydraulic gate engineering.
Applications That Benefit Most
- Beverage distribution fleets
- Urban package delivery
- Route sales and merchandising trucks
- Food service and catering logistics
Whether you're outfitting a single route truck or upgrading an entire fleet, the SL series delivers the flexibility and reliability needed in high-cycle delivery environments.
Frequently Asked Questions
1. What types of vehicles are compatible with the Thieman SL Sideloader Liftgate?
The SL is designed for side-mount applications on beverage trucks, box trucks, and route delivery vehicles with sufficient side wall strength and clearance.
2. Can I install the SL liftgate on the left or right side of the truck?
Yes, the SL Sideloader liftgate can be mounted on either side of the vehicle. Installation instructions for both sides are provided in the SL-INST manual.
3. What is the maximum lifting capacity?
SL models support 1,500 lbs or 2,000 lbs, depending on the model (e.g., SL-15EST vs SL-20EST).
4. What platform sizes are available?
The SL liftgate offers 72” or 120” wide platforms, with a standard 24” platform depth. Materials include steel or aluminum.
5. Are spare parts available for the SL series?
Yes, OEM replacement parts for all Thieman liftgates are available and can be searched by model or part number.
