Thieman TDR Series
The Thieman TDR is a rugged column gate built for heavy-duty vertical lifting, ideal for delivery fleets and commercial vehicles.
With capacities up to 6,600 lbs and a low-maintenance design, it’s a dependable solution from a trusted name in liftgates.
Search Thieman liftgate, Thieman tailgates, or column gate for powerful vertical lift performance.
Shop Thieman TDR Parts by Number
Find genuine Thieman TDR liftgate parts by part number for fast, accurate replacements. Whether you're servicing a TDR 44, TDR 55, or TDR 66, we carry OEM parts to keep your Thieman liftgates running reliably. Search by part number to get started.
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These are America's best selling THIEMAN TDR PARTS. Although these are the best sellers, there are hundreds of variations depending on your unique liftgate's model, and year.
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Thieman TDR Liftgate: A True Column Gate for Demanding Jobs
All about Thieman TDR Series Liftgate
When you need dependable vertical lifting in commercial trucking applications, the Thieman TDR series delivers. Though technically categorized by Thieman as a “railgate,” the TDR behaves more like a column gate—with a rigid, straight-vertical lift design favored in high-cycle and high-capacity settings.
Whether you're hauling freight, running a municipal fleet, or managing deliveries, the TDR offers a reliable, long-lasting solution backed by Thieman’s legacy of liftgate innovation.
Built for Heavy-Duty Performance
The TDR series comes in three capacity ratings:
- TDR 44 – 4,400 lb capacity
- TDR 55 – 5,500 lb capacity
- TDR 66 – 6,600 lb capacity
This flexibility allows you to match the right model to your vehicle’s needs without sacrificing performance.
Column Gate Stability
Thanks to its dual vertical tracks and fixed lifting mechanism, the TDR provides:
- Smooth vertical travel
- Excellent platform stability
- Reduced pivot points for lower maintenance
This is what sets it apart from traditional railgates—it operates with the stability and straight lift you’d expect from a column gate.
Durable, Low-Maintenance Design
Constructed with heavy-gauge steel, reinforced welds, and quality components, the TDR is designed to handle tough work conditions. With fewer moving parts than a cantilever or tuck-under style, it's easier to maintain and service over time.
Large Aluminum Platforms
The TDR series comes standard with heavy-duty aluminum platforms—offering a balance of strength and reduced weight for easier operation and better fuel efficiency.
Versatile Applications
- Straight trucks and box trucks
- Delivery and logistics fleets
- Municipal and public utility vehicles
- Freight handling in industrial environments
If you're looking for a true column gate that delivers performance and reliability, the TDR should be at the top of your list.
Backed by Thieman Quality
With over 50 years in the industry, Thieman liftgate is trusted by operators across North America. From Thieman tailgates to full-size column gates, the brand has built a reputation on practical engineering and rugged dependability.
Whether you're looking for a Thieman liftgate for a fleet upgrade or replacing an aging system, the TDR series gives you the power and peace of mind you need.
Frequently Asked Questions
1. Is the TDR liftgate considered a railgate or a column gate?
Thieman categorizes the TDR as a railgate, but its performance and design—straight vertical lift and rigid tracks—make it functionally a column gate, similar to what you'd find in Maxon’s lineup.
2. What capacities are available in the TDR series?
The TDR series is available in 4,400 lb (TDR 44), 5,500 lb (TDR 55), and 6,600 lb (TDR 66) configurations.
3. Can I replace parts for the TDR liftgate individually?
Yes, OEM parts for the TDR liftgate can be ordered by part number. Common replacements include platform pins, hydraulic cylinders, and motor assemblies; and the best part is that all liftgate parts are ready to purchase through our team!
4. What vehicles are compatible with the TDR liftgate?
The TDR is commonly used on straight trucks, box trucks, and commercial delivery vehicles. Mounting requirements vary by model and chassis.
5. Does the TDR come with an aluminum or steel platform?
The TDR series comes standard with a heavy-duty aluminum platform. Custom configurations may be available—check with your dealer.
