Introduction
Robotic systems are no longer limited to fixed working heights. In many modern applications, a robot must adjust its vertical position to reach different workstations, avoid obstacles, dock with equipment, lift payloads, or extend its operating range.
A robotic lifting column works as a vertical motion module. It allows mobile robots, AGV/AMR platforms, service robots, collaborative robots, and industrial robotic arms to move up and down with controlled stroke, stable support, and repeatable positioning.
However, different robot applications require different column structures. A compact mobile robot does not need the same lifting system as a heavy-duty industrial robot seventh axis. Choosing the wrong model may lead to insufficient load capacity, poor lateral stability, oversized structure, or unnecessary cost.
This guide compares five robotic lifting column models: HTD3-12, HTD3-14, HTA3, HTB3-18, and HTG3.
Quick Selection Table
| Model | Best For | Structure Type | Max Thrust / Load | Speed | Lateral Moment | Main Advantage |
|---|---|---|---|---|---|---|
| HTD3-12 | Compact mobile robots, service robots, AGV/AMR height adjustment | 125 × 125 mm square column | 500 N push / pull | 0–60 mm/s | Dynamic 500 Nm / Static 700 Nm | Compact size and light weight |
| HTD3-14 | Medium robotic platforms requiring higher thrust | 142 × 142 mm square column | 1500 N push / pull | 0–150 mm/s | Dynamic 500 Nm / Static 700 Nm | Higher thrust in a compact column |
| HTA3 | Mobile robots needing stronger lateral stability | 193 × 141 mm rectangular column | 1500 N push / pull | 0–150 mm/s under 800 N load | Dynamic 800 Nm / Static 1000 Nm | Better anti-bending performance |
| HTB3-18 | Collaborative robot height adjustment, light-to-medium robot seventh-axis systems | 186 × 186 mm square column | 3000 N push / 500 N pull | 0–150 mm/s depending on load | Dynamic 2500 Nm / Static 3500 Nm | Long stroke with lighter body weight |
| HTG3 | Heavy-duty industrial robot seventh-axis applications | Large industrial square column | 15 kN load | 0–300 mm/s depending on load | Dynamic 5500 Nm / Static 8000 Nm | Heavy-duty load and high lateral rigidity |
1. HTD3-12: Compact Lifting Column for Lightweight Mobile Robots
The HTD3-12 is a compact square lifting column designed for mobile robots, service robots, and AGV/AMR intelligent equipment. With a 125 × 125 mm column profile, it is suitable for robots where installation space and total system weight are limited.
It uses a DC servo motor and ball screw structure to provide controlled vertical movement, smooth start and stop, and stable positioning.
Key Specifications
| Item | HTD3-12 |
| Column size | 125 × 125 mm |
| Body weight | Approx. 12.5 kg |
| Voltage | 25–48 V DC |
| Motor type | DC servo motor |
| Maximum thrust / pull | 500 N / 500 N |
| Maximum speed under load | 0–60 mm/s |
| Minimum initial height | Stroke / 2 + 250 mm |
| Dynamic lateral torque | 500 Nm |
| Static lateral torque | 700 Nm |
| Protection rating | IP54 |
| Communication options | CANopen / EtherCAT / RS485 |
| Limit options | Soft limit, mechanical limit |
Recommended Applications
HTD3-12 is suitable for:
- Small mobile robots
- Lightweight service robots
- AGV/AMR height adjustment
- Sensor module lifting
- Light manipulation platforms
- Robot workstation docking
When to Choose HTD3-12
Choose HTD3-12 when your priority is compact size, lower weight, and moderate lifting force. It is not designed for heavy industrial robot arms or large cantilever loads. It is a practical choice for robot systems where the lifting column is mainly used for height adjustment rather than heavy-load support.
2. HTD3-14: Higher Thrust for Medium Robotic Platforms
The HTD3-14 is a stronger version within the HTD3 series. It uses a 142 × 142 mm square column and provides up to 1500 N push and pull force. Compared with HTD3-12, it offers significantly higher thrust while still keeping a compact robotic-column structure.
Key Specifications
| Item | HTD3-14 |
| Column size | 142 × 142 mm |
| Body weight | Approx. 14.5 kg |
| Voltage | 48 V DC |
| Motor type | DC servo motor |
| Maximum thrust / pull | 1500 N / 1500 N |
| Maximum speed under load | 0–150 mm/s |
| Minimum initial height | Stroke / 2 + 250 mm |
| Dynamic lateral torque | 500 Nm |
| Static lateral torque | 700 Nm |
| Protection rating | IP54 |
| Communication options | CANopen / EtherCAT / RS485 |
| Limit options | Soft limit, mechanical limit |
Recommended Applications
HTD3-14 is suitable for:
- Medium service robots
- Mobile manipulation platforms
- AGV/AMR systems with heavier upper modules
- Robot torso height adjustment
- Dual-sensor or light robotic-arm lifting
- Workstation docking and obstacle avoidance
When to Choose HTD3-14
Choose HTD3-14 when HTD3-12 is too light, but the robot still requires a compact body. It is suitable for robotic platforms that need higher thrust, faster lifting speed, and servo-controlled motion, without moving into a larger industrial lifting column.
3. HTA3: Rectangular Robotic Lifting Column with Higher Lateral Stability
The HTA3 is a 193 × 141 mm rectangular lifting column designed for embodied robots, mobile robots, service robots, and AGV/AMR equipment. Its wider rectangular profile gives it better lateral stability than smaller square columns, making it more suitable for robots with larger upper structures or offset loads.
Key Specifications
| Item | HTA3 |
| Column size | 193 × 141 mm rectangular column |
| Body weight | Approx. 17 kg |
| Voltage | 48 V DC |
| Motor type | DC servo motor |
| Maximum thrust / pull | 1500 N / 1500 N |
| Maximum speed under load | 0–150 mm/s under 800 N load |
| Minimum initial height | Stroke / 2 + 250 mm |
| Dynamic lateral torque | 800 Nm |
| Static lateral torque | 1000 Nm |
| Noise | 48–70 dB |
| Protection rating | IP54 |
| Communication options | CANopen / EtherCAT / RS485 |
| Limit options | Soft limit, mechanical limit |
Recommended Applications
HTA3 is suitable for:
- Embodied intelligence robots
- Mobile manipulation robots
- AGV/AMR systems with higher center of gravity
- Robot torso lifting
- Dual-arm robot shoulder height adjustment
- Robotic platforms with offset-mounted equipment
When to Choose HTA3
Choose HTA3 when the robot requires better anti-bending performance and more stable support than HTD3-12 or HTD3-14. It is especially suitable when the upper load is not perfectly centered, or when the robot carries cameras, arms, sensors, or tooling above the column.
If the application involves a mobile robot with a dual-arm structure, HTA3 is usually a more stable choice than a smaller square column.
4. HTB3-18: Long-Stroke Lifting Column for Collaborative Robot Height Adjustment
The HTB3-18 is designed for collaborative robot height adjustment and light-to-medium robot seventh-axis systems. It provides a long travel range of 500–3000 mm and supports a push force up to 3000 N.
Compared with compact embodied-robot columns, HTB3-18 is more suitable for extending the working range of collaborative robots in packaging, palletizing, warehousing, and assembly-line automation.
Key Specifications
| Item | HTB3-18 |
| Column size | 186 × 186 mm class |
| Voltage | 48 V DC / 220 V AC / 380 V AC |
| Maximum push force | 3000 N |
| Maximum pull force | 500 N |
| Speed at full load | 0–200 mm/s depending on load |
| Travel range | 500–3000 mm |
| Retracted height | Stroke / 2 + 300 mm |
| Dynamic lateral moment | 2500 Nm |
| Static lateral moment | 3500 Nm |
| Positioning repeatability | ±0.2–1 mm |
| Protection level | IP54 |
| Screw options | Trapezoidal screw standard, ball screw optional |
| Communication protocol | EtherCAN / Modbus RTU, customizable |
Recommended Applications
HTB3-18 is suitable for:
- Collaborative robot height adjustment
- Robot seventh-axis vertical lifting
- Packaging automation
- Palletizing stations
- Warehousing automation
- Assembly-line upgrade projects
- Cost-sensitive long-stroke robot lifting systems
When to Choose HTB3-18
Choose HTB3-18 when the main requirement is long vertical travel and extended robot working range, but the load is not as extreme as a heavy industrial robot seventh-axis system.
It is a practical option for collaborative robot applications where the robot needs to work from low-level picking positions to higher palletizing or stacking positions.
5. HTG3: Heavy-Duty Seventh Axis for Industrial Robotic Arms
The HTG3 is a heavy-duty lifting column designed for industrial robotic arms. It provides up to 15 kN load capacity, a stroke range of 600–3000 mm, and high lateral moment resistance. This makes it suitable for demanding industrial applications where load, rigidity, and stability are the main concerns.
Key Specifications
| Item | HTG3 |
| Voltage | 48 V DC / 220 V AC / 380 V AC |
| Maximum load | 15 kN |
| Speed at full load | 0–200 mm/s depending on load |
| Stroke range | 600–3000 mm |
| Retracted height | Stroke / 2 + 350 mm; stroke over 2000 mm: +400 mm |
| Dynamic lateral moment | 5500 Nm |
| Static lateral moment | 8000 Nm |
| Positioning repeatability | ±0.2–1 mm |
| Body weight | Approx. 460 kg at zero stroke; +25 kg per 100 mm stroke |
| Screw selection | High-precision ball screw |
| Lead screw | 20 mm or 40 mm |
| Limit function | Mechanical self-locking limit switches |
| Communication protocol | EtherCAN / Modbus RTU, customizable |
Recommended Applications
HTG3 is suitable for:
- Heavy-duty industrial robotic arms
- Large robot seventh-axis lifting systems
- Heavy palletizing
- Automotive automation
- Industrial handling systems
- High-rigidity robot base lifting
- Production-line automation requiring large vertical range
When to Choose HTG3
Choose HTG3 when the application requires high load capacity, high lateral rigidity, and industrial-grade stability. It is not a lightweight mobile-robot column. It is a heavy-duty vertical axis for industrial robot systems where structural strength is more important than compact size.
How to Choose the Right Model
Choose HTD3-12 if:
You need a compact lifting column for a lightweight robot, service robot, sensor lift, or AGV/AMR system with moderate load requirements.
Choose HTD3-14 if:
You need a compact robotic lifting column but require higher thrust and faster lifting speed than HTD3-12.
Choose HTA3 if:
Your mobile robot has a larger upper structure, offset load, dual-arm layout, or higher stability requirement. HTA3 offers better lateral support than the smaller HTD3 models.
Choose HTB3-18 if:
You need a long-stroke lifting column for collaborative robot height adjustment, palletizing, packaging, or warehousing automation.
Choose HTG3 if:
You need a heavy-duty industrial robot seventh axis with high load capacity, high rigidity, and a large vertical working range.
Selection Logic by Application
| Application | Recommended Model |
| Small service robot | HTD3-12 |
| Compact AGV/AMR height adjustment | HTD3-12 / HTD3-14 |
| Medium mobile robot | HTD3-14 |
| Dual-arm mobile robot | HTA3 |
| Embodied intelligence robot torso lift | HTA3 |
| Collaborative robot palletizing | HTB3-18 |
| Packaging station robot height adjustment | HTB3-18 |
| Heavy-duty industrial robot seventh axis | HTG3 |
| Automotive automation robot base lift | HTG3 |
| High-rigidity industrial lifting axis | HTG3 |
Key Factors Before Final Selection
Before selecting a robotic lifting column, the following technical information should be confirmed:
- Robot weight and upper load
Include the robot arm, sensors, end effectors, brackets, and any dynamic payload. - Load position
A centered load is easier to support than an offset or cantilevered load. For offset loads, lateral moment is more important than simple vertical thrust. - Required stroke
Longer stroke increases the extended height and may reduce overall rigidity. Always check both closed height and extended height. - Required speed
High speed under load requires proper motor, screw, and controller configuration. - Control method
For robotic applications, CANopen, EtherCAT, RS485, or customized communication may be required. - Installation space
Compact robots usually need HTD3 or HTA3. Industrial robot seventh-axis applications usually require HTB3-18 or HTG3. - Working environment
Confirm temperature, dust, moisture, vibration, and protection rating requirements before final configuration.
Conclusion
There is no single lifting column that fits every robotic application.
For compact mobile robots, HTD3-12 and HTD3-14 are more suitable. For embodied robots or mobile manipulators requiring better stability, HTA3 is a stronger choice. For collaborative robot height adjustment and long-stroke palletizing systems, HTB3-18 provides a cost-effective vertical seventh-axis solution. For heavy-duty industrial robot applications, HTG3 offers the highest load capacity and structural rigidity.
The right selection depends on load, stroke, speed, lateral moment, installation space, and communication requirements. For robotic projects with customized structure, off-center load, or special control requirements, it is recommended to confirm the working condition with engineering drawings before final selection.
FAQ
What is a robotic lifting column?
A robotic lifting column is a vertical motion system used to raise or lower a robot, sensor module, robotic arm, or mobile platform. It helps robots adjust working height, extend reach, and dock with different workstations.
What is the difference between HTD3 and HTA3?
HTD3 is more compact and suitable for lightweight to medium robotic platforms. HTA3 has a rectangular profile and higher lateral moment capacity, making it more suitable for robots with larger upper structures or offset loads.
Which model is suitable for a dual-arm mobile robot?
HTA3 is usually the better choice for a dual-arm mobile robot because it provides higher lateral stability than smaller compact columns.
Which model is suitable for collaborative robot palletizing?
HTB3-18 is suitable for collaborative robot height adjustment and palletizing applications where long vertical travel is required.
Which model should be used for heavy industrial robotic arms?
HTG3 is designed for heavy-duty industrial robot seventh-axis applications. It provides higher load capacity and higher lateral rigidity than compact robotic lifting columns.
Can these lifting columns support CANopen or EtherCAT?
Several robotic models can support communication options such as CANopen, EtherCAT, RS485, EtherCAN, or Modbus RTU, depending on the model and customized configuration.
Can the stroke be customized?
Yes. Stroke, closed height, wiring method, control method, mounting plate, and communication interface can be customized according to the robot structure and project requirements.