Introduction
Thank you for choosing the BONTEC GDM01 Single Monitor Arm. This manual provides essential information for the safe and correct installation, operation, and maintenance of your monitor arm. Please read these instructions carefully before assembly and keep them for future reference.
The BONTEC GDM01 is designed to support LCD LED screens ranging from 13 to 27 inches, with a maximum weight capacity of 6.5 kg (14.3 lbs). It features a gas spring for smooth height adjustment and offers full motion flexibility, including tilt, swivel, and rotation, to achieve an ergonomic viewing position.
Safety Information
- Ensure all components are present and undamaged before assembly. Do not use damaged parts.
- Do not exceed the maximum weight capacity of 6.5 kg (14.3 lbs).
- Ensure the mounting surface (desk) is strong enough to support the combined weight of the monitor arm and your monitor.
- Tighten all screws firmly but do not overtighten. Overtightening can damage the product.
- Always use two people for heavy lifting or when attaching the monitor to the arm.
- Keep children away from small parts that could be swallowed.
- If you have any questions or encounter difficulties, contact customer support.
Package Contents
Please verify that all parts are included in your package:
- Monitor Arm Assembly
- Desk Clamp Component
- Grommet Mount Component
- VESA Plate
- Hardware Kit (screws, washers, Allen keys)
- Instruction Manual
Setup and Installation
The BONTEC GDM01 monitor arm offers two installation methods: desk clamp and grommet mount.
Method 1: Desk Clamp Installation
- Attach the Clamp Base: Secure the C-clamp to the edge of your desk. Ensure the desk thickness is between 10mm and 83mm. Tighten the clamp screw until the base is firmly attached to the desk.
- Attach the Arm: Slide the monitor arm assembly onto the pole of the clamp base. Secure it with the provided screws or locking mechanism.
- Attach VESA Plate to Monitor: Align the VESA plate with the mounting holes on the back of your monitor (75x75mm or 100x100mm). Use the appropriate screws from the hardware kit to secure the plate to the monitor.
- Mount Monitor to Arm: Carefully slide the monitor (with VESA plate attached) onto the arm's mounting head. The open top slots on the VESA plate make this process easier. Ensure it clicks into place or is secured with the locking screw.


Method 2: Grommet Mount Installation
- Prepare Grommet Hole: Ensure your desk has a grommet hole. If not, you may need to drill one (consult a professional if unsure).
- Insert Grommet Base: Place the grommet base through the hole. Secure it from underneath the desk with the provided plate and nut.
- Attach the Arm: Slide the monitor arm assembly onto the pole of the grommet base. Secure it with the provided screws or locking mechanism.
- Attach VESA Plate to Monitor: Align the VESA plate with the mounting holes on the back of your monitor (75x75mm or 100x100mm). Use the appropriate screws from the hardware kit to secure the plate to the monitor.
- Mount Monitor to Arm: Carefully slide the monitor (with VESA plate attached) onto the arm's mounting head. Ensure it clicks into place or is secured with the locking screw.
Operating and Adjusting the Monitor Arm
The BONTEC GDM01 monitor arm offers extensive adjustability for optimal viewing comfort and ergonomics.
Tension Adjustment (Gas Spring)
The built-in gas spring allows for smooth and effortless height adjustment. The tension needs to be adjusted according to the weight of your monitor.
- If the monitor arm sags or cannot hold the monitor's weight, turn the bolt clockwise to increase gas spring tension.
- If the monitor arm is too stiff or difficult to move downwards, turn the bolt counter-clockwise to decrease tension.

Height Adjustment
Once the gas spring tension is correctly set, you can easily raise or lower your monitor to the desired height. The arm allows for a height adjustment range from 155mm to 400mm.

Tilt, Swivel, and Rotation
- Tilt: Adjust the monitor tilt from -45° to +90° to reduce glare and find your preferred viewing angle.
- Swivel: The arm allows for 180° swivel at the base and 250° swivel at the joint, enabling you to share your screen or change viewing direction.
- Rotation: Rotate your monitor 360° for landscape or portrait orientation.



Cable Management
The integrated cable management system helps keep your workspace tidy. Route your monitor cables along the arm and through the designated clips or channels to conceal them.

Maintenance
- Regularly check all screws and connections to ensure they remain tight.
- Clean the monitor arm with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Do not attempt to disassemble the gas spring mechanism.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Monitor arm sags or won't stay up. | Gas spring tension is too low for the monitor's weight. | Increase gas spring tension by turning the adjustment bolt clockwise with the provided Allen key. |
| Monitor arm is too stiff to move. | Gas spring tension is too high. | Decrease gas spring tension by turning the adjustment bolt counter-clockwise with the provided Allen key. |
| Monitor wobbles on the arm. | VESA plate screws or arm connection screws are loose. | Ensure all VESA plate screws and arm connection screws are securely tightened. |
| Desk clamp is not stable. | Clamp not tightened sufficiently or desk surface is uneven. | Retighten the desk clamp. Ensure the desk surface is flat and stable. Consider using the grommet mount if the clamp is unsuitable. |
Specifications
- Model: GDM01
- Material: Alloy Steel
- Screen Size Compatibility: 13 - 27 inches
- Weight Capacity: 6.5 kg (14.3 lbs)
- VESA Compatibility: 75x75mm, 100x100mm
- Height Adjustment Range: 155mm - 400mm
- Arm Extension: Up to 525mm
- Tilt Range: -45° to +90°
- Swivel Range: 180° (base), 250° (joint)
- Rotation: 360°
- Desk Clamp Thickness: 10mm - 83mm

Warranty and Support
BONTEC products are designed for durability and performance. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official BONTEC website. Please have your model number (GDM01) and purchase details ready when contacting support.
Manufacturer: BONTEC