Floor Spring Exchangeable S221

  • Floor Spring exchangeable S221
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Product Description

Floor Spring Exchangeable S221 Product Description

Floor Spring Exchangeable S221 is a heavy duty replaceable floor spring designed for demanding commercial door control systems. Suitable for offset single-acting and center-hung double-acting doors, this model supports door widths up to 1100mm and a maximum door weight of 200kg. It is widely used as an exchangeable heavy duty floor spring for office buildings, retail storefronts, shopping malls, and other projects requiring stable operation for heavy doors and heavy glass doors.

For buyers, contractors, and project planners looking for a practical floor spring replacement heavy door solution, S221 offers an efficient replaceable mechanism design that helps reduce downtime and maintenance work. It can also serve as a replaceable floor spring for heavy glass door systems, a high load replaceable floor spring system for high-frequency entrances, and a dependable heavy duty floor spring maintenance solution for long-term commercial use.

Key Features of Floor Spring Exchangeable S221

  • Suitable for offset single-acting and center-hung double-acting doors
  • Supports up to 1100mm door width and 200kg door weight
  • Maximum opening angle options: 130° / 180°
  • Non-hold-open option available for fire door applications
  • Independent adjustment of closing speed and latching speed
  • Replaceable spindle and mechanism design for easier future servicing
  • Two-piece cover plate for easier removal and on-site adjustment
  • Side-securing screws for improved mounting stability
  • Suitable for heavy-duty commercial door and heavy glass door replacement projects

Recommended Replacement & Maintenance Use

  • Floor spring replacement for commercial buildings
  • Easy maintenance heavy duty floor spring applications
  • High-load entrance systems with long-term maintenance planning

If you are comparing different door control systems, you may also review our Floor Spring Series, Transom Closer Series, Floor Spring Accessories, and Transom Closer Accessories to select the right solution based on door type, mounting position, and load requirement.

Why Choose CHIEN CHIN as Your Floor Spring Supplier?

  • ✔ Over 30 years of experience in door control hardware manufacturing
  • ✔ Specialized in floor springs, transom closers, and door control systems
  • ✔ Strong capability in heavy-duty and replaceable floor spring solutions
  • ✔ OEM / ODM manufacturing support for project and distributor needs
  • ✔ Stable production capacity for bulk orders and long-term cooperation

If you are looking for a floor spring manufacturer, a reliable floor spring supplier, or an OEM / ODM partner for heavy-duty commercial door hardware, CHIEN CHIN can provide professional recommendations and suitable solutions based on your application and project requirements. You are also welcome to learn more on our About Us and Certificate pages.

Product Feature

Floor Spring Exchangeable S221 Features

Floor Spring Exchangeable S221 is an exchangeable heavy duty floor spring developed for high-load commercial entrances and demanding replacement projects. Suitable for heavy doors and selected heavy glass door systems, this model is commonly chosen as a heavy duty replaceable floor spring where long-term stability, high load support, and maintenance efficiency are all important.

200kg High Load Capacity

Supports door weights up to 200kg, making S221 a practical high load replaceable floor spring system for oversized commercial doors and demanding entrances.

Replaceable Heavy-Duty Design

Its exchangeable mechanism design allows easier servicing, making it a dependable heavy duty floor spring maintenance solution for long-term building operation.

Easy Maintenance Structure

S221 is an easy maintenance heavy duty floor spring because the inner mechanism can be replaced without removing the entire cement case, helping reduce labor and downtime.

Dual-Speed Adjustment

Independent valves for closing speed and latching speed help improve safety, user experience, and door control performance in heavy-duty applications.

Stable Installation Structure

With a two-piece cover plate and side-securing screws, S221 provides improved alignment accuracy and better long-term stability in high-frequency use environments.

Recommended Applications

S221 is suitable for office building entrances, shopping malls, commercial glass doors, and other projects requiring floor spring replacement for commercial buildings. It can also be used as a replaceable floor spring for heavy glass door systems where long-term service convenience and reduced downtime are important. For more related products, please visit our Floor Spring Series. If you would like to compare another mounting solution, you may also review our Transom Closer Series.

For importers, distributors, contractors, and project buyers looking for a dependable heavy duty replaceable floor spring, Floor Spring Exchangeable S221 is a strong choice that combines high load support, maintenance efficiency, and commercial project suitability.

Product Specification

Floor Spring Exchangeable S221 Specifications

Below are the main specifications of Floor Spring Exchangeable S221 for buyers, contractors, architects, and project planners to evaluate door size, load requirement, installation conditions, and future maintenance convenience. As a heavy duty replaceable floor spring and exchangeable heavy duty floor spring, S221 is suitable for high-load replacement and maintenance projects involving heavy commercial doors and heavy glass doors. If you would like to compare more door control products, please also review our Floor Spring Series, Transom Closer Series, and Wooden Door Closer Series.

Item Specification
Model Exchangeable S221
Product Type Floor Spring / Heavy Duty Replaceable Floor Spring
Applicable Door Type Offset single-acting door / Center-hung double-acting door
Max. Door Width 1100mm
Max. Door Weight 200kg
Max. Opening Angle 130° / 180°
Fire Door Compatibility Non-hold-open option available for fire door safety
Speed Control Independent adjustment of closing speed and latching speed
Structural Design Two-piece cover plate / Side-securing screws / Exchangeable spindle
Hold-Open Application Fire door: Double-acting 180° (Wall-stop) / Single-acting 190° (Electromagnetic)
Cement Box Size (mm) L297 x W145 x H48
Inner Adjustable Space of Cement Box (mm) L6 x W6
Cover Plate Size (mm) L308 x W146 x T1.0

If your project requires comparison of different door control hardware types, installation conditions, or related accessories, you may also review our Floor Spring Series, Floor Spring Accessories, and Transom Closer Series for complete door hardware planning.

How to Choose the Right Floor Spring?

When selecting a floor spring, we recommend evaluating the application, door weight, and whether future replacement or maintenance convenience is required. The comparison below helps buyers, contractors, and specifiers quickly understand the differences between each model, especially when comparing standard, replaceable, and heavy-duty solutions.

Model Type Recommended Application Main Advantage
S200 Fixed Type General commercial spaces, offices Standard floor spring, entry-level solution
Exchangeable S200 Exchangeable Type Replacement projects, maintenance applications Only the body needs replacement for easier maintenance
S220 Fixed Type Commercial spaces, offices, storefront doors Stable and durable standard specification
Exchangeable S221 Exchangeable Heavy-Duty Type Heavy commercial doors, offices, shopping malls High load support with easier future replacement
S275 Heavy Duty / Exchangeable Heavier doors, fire-rated doors Higher load capacity for different floor levels and environments
S280 Heavy Duty / Exchangeable Large doors, high-load projects, fire-rated doors Heavy-duty solution for demanding entrance systems

Advantages of Exchangeable Floor Spring Design

Exchangeable S200, Exchangeable S221, S275, and S280 all feature an exchangeable design that can adapt to different floor heights and project environments. During maintenance, only the main body needs to be replaced instead of removing the full set, helping reduce maintenance cost, shorten downtime, and improve long-term service convenience. This makes S221 a practical heavy duty floor spring maintenance solution for commercial properties and a dependable floor spring replacement for commercial buildings.

Floor Spring Exchangeable S221 FAQ

Q1: What types of doors is Floor Spring Exchangeable S221 suitable for?
Floor Spring Exchangeable S221 is suitable for offset single-acting and center-hung double-acting doors. It is commonly used in offices, shopping malls, storefronts, and other high-frequency commercial entrances.
Q2: Is Floor Spring Exchangeable S221 suitable for heavy duty door applications?
Yes. With support for doors up to 200kg, S221 is a practical floor spring replacement heavy door option for demanding commercial entrances and large door systems.
Q3: Can Floor Spring Exchangeable S221 be used as a replaceable floor spring for heavy glass doors?
Yes. Depending on the door structure and installation conditions, S221 can be used as a replaceable floor spring for heavy glass door systems in commercial buildings and storefront applications.
Q4: What are the maintenance advantages of an exchangeable heavy duty floor spring?
Its exchangeable mechanism allows replacement of the inner body without removing the full cement case, making it an easy maintenance heavy duty floor spring for commercial projects that want to reduce labor cost and service downtime.
Q5: Is Floor Spring Exchangeable S221 suitable for floor spring replacement in commercial buildings?
Yes. S221 is often selected for floor spring replacement for commercial buildings, especially where heavy doors, high traffic, and long-term maintenance planning are key concerns.
Q6: Why choose CHIEN CHIN as your heavy duty floor spring manufacturer and supplier?
CHIEN CHIN has over 30 years of experience in door control hardware manufacturing, with strong OEM / ODM support and practical product recommendations for commercial and heavy-duty entrance projects.

Need a Floor Spring Quote or Product Recommendation?

If you are looking for a floor spring manufacturer, a reliable floor spring supplier, or an OEM / ODM commercial door hardware partner, CHIEN CHIN can recommend the right solution based on door type, door weight, installation conditions, and project requirements.

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