Ozone Door Closer – NSK-680E

Ozone Door Closer NSK-680E – Hydraulic Door Closer for Up to 80 Kg Doors

The Ozone Door Closer NSK-680E offers smooth and controlled closing for medium to heavy doors. Its hydraulic rack-and-pinion mechanism guides the door back to its closed position. Therefore, it helps reduce sudden slamming and improves everyday door movement.

Designed by Ozone, the NSK-680E door closer supports doors weighing up to 80 kg. It also works with doors up to 1250 mm wide. As a result, it suits many homes, offices, hotels, shops and commercial spaces.

The closer offers an adjustable EN 2-4 closing force. Moreover, you can adjust the closing and latching speeds separately. This gives you better control over how the door moves.

Explore our complete range of standard arm door closers to compare models for different door weights and sizes.

Why Choose the Ozone NSK-680E Door Closer?

The Ozone NSK-680E hydraulic door closer combines strong construction with adjustable closing control.

Its rack-and-pinion mechanism provides smooth door movement. In addition, two separate valves let you control the closing and latching speeds.

The closer also offers EN 2-4 adjustable closing force by positioning. Therefore, installers can select a suitable closing force according to the door and installation.

Ozone has tested the NSK-680E for 500,000 cycles. It also meets the EN 1154 standard for door closing devices.

Key Features

• Supports doors weighing up to 80 kg
• Suitable for doors up to 1250 mm wide
• Requires a minimum door thickness of 42 mm
• Rack-and-pinion door closer
• Adjustable closing force from EN 2-4
• Adjustable closing speed
• Adjustable latching speed
• Two independent speed control valves
• Standard scissor arm
• Non-handed design
• Suitable for left-hand and right-hand doors
• Can mount on the door leaf or transom
• EN 1154 tested
• Tested for 500,000 cycles
• Available in Silver finish
• Suitable for residential and commercial use

Hydraulic Door Closer for Heavy Doors

The Ozone NSK-680E automatic door closer works well on doors that need stronger closing control.

It supports doors weighing up to 80 kg. Therefore, it suits many medium to heavy wooden and metal doors within the recommended size limits.

Once someone releases the door, the hydraulic mechanism controls its return movement. As a result, the door closes in a smoother and more controlled way.

This makes the NSK-680E useful in homes as well as busy commercial spaces.

For more options, browse our complete collection of door closing systems.

Adjustable Closing and Latching Speed

Different doors need different closing speeds. Therefore, the Ozone NSK-680E lets you adjust the closing action according to your needs.

One valve controls the main closing speed. Meanwhile, the second valve controls the final latching movement.

This separate adjustment gives you better control over the door. Moreover, it can help reduce sudden impact on the frame and nearby hardware.

Adjustable EN 2-4 Closing Force

The Ozone NSK-680E offers an adjustable EN 2-4 closing force by positioning.

This feature gives installers more flexibility during setup. Therefore, they can select a suitable closing force based on the door size and site conditions.

The adjustable power also makes this closer suitable for a wider range of doors than a fixed-force model.

Rack-and-Pinion Door Closer

The NSK-680E uses a rack-and-pinion mechanism to control door movement.

When the door opens, the closer stores the required closing force. It then uses hydraulic control to guide the door back towards the frame.

As a result, the door gets a steady and controlled closing action.

The closer also uses a strong scissor arm. Therefore, it offers a practical solution for regular residential and commercial use.

Back Check for Better Door Control

The Ozone NSK-680E also includes a back check function.

This feature starts slowing the door after it opens beyond a certain angle. Therefore, it helps control doors that open too quickly.

As a result, the back check can help reduce sudden impact on the door, closer and nearby wall.

Suitable for Left and Right-Hand Doors

The Ozone NSK-680E door closer uses a non-handed design. Therefore, installers can use it with both left-hand and right-hand doors.

It can also mount on either the door leaf or transom. This provides more flexibility when planning the installation.

However, always check the door dimensions and site conditions before installation.

Door Closer for Doors Up to 80 Kg

Choosing a door closer according to door weight helps ensure proper performance.

The Ozone NSK-680E supports doors weighing up to 80 kg and measuring up to 1250 mm wide. Therefore, it works well for many medium to heavy residential and commercial doors.

However, lighter doors may work better with a lower-capacity model. Similarly, very heavy or wider doors may need a stronger closer.

If you are comparing different models, read our guide to the best door closer for home in India.

Standard Door Closer vs Concealed Door Closer

The Ozone NSK-680E uses a surface-mounted scissor arm design. Therefore, the closer body and arm remain visible after installation.

This design offers easy access for adjustment and maintenance. It also makes the NSK-680E a practical choice when performance and easy servicing matter.

However, some interiors need hidden hardware. In that case, explore our range of concealed door closers.

Your choice should depend on the door weight, width, thickness, usage and design requirements.

Tested for 500,000 Cycles

Ozone has tested the NSK-680E for 500,000 operating cycles.

Moreover, the closer meets the EN 1154 standard for controlled door closing devices. These specifications make it a strong choice for doors that see regular daily use.

The NSK-680E also comes with a 1-year manufacturer warranty.

Buy Ozone NSK-680E Door Closer Online in India

Choose the Ozone Door Closer NSK-680E if you need a dependable hydraulic door closer for doors up to 80 kg.

Its rack-and-pinion mechanism, adjustable EN 2-4 closing force and separate speed controls provide smooth door movement. Moreover, its 500,000-cycle testing makes it suitable for regular residential and commercial use.

Shop Ozone door closers online in India at That Hardware Store and explore door closing solutions for homes, offices, hotels, shops and commercial projects.