Products Description
| Product Type | DW type rubber torsion-elastic suspension unit (benchmarked against ROSTA DW-A series) |
| Product Form | Extruded aluminum U-profile housing + square threaded metal inner core + four independent rubber elastomer inserts; one-piece mounting flange base; approximate length 130 mm |
| Primary Use | Elastic pivot support for children's playground seesaws and rocking equipment - provides oscillating rebound, cushioning, and travel limitation |
| Functional Characteristics | Three-in-one torsion-elastic unit combining spring + damping + pivot bearing; maintenance-free; smooth rebound; integrated anti-dislodgement limitation |
| Material | Housing - 6061 extruded aluminum; inner core - carbon steel; elastomer - weather-resistant natural rubber compound |
| Application Scenarios | Outdoor playground seesaws, rocking play equipment (classic native application of ROSTA DW) |
| Installation Method | Flange base bolted to equipment foundation; square inner core connects to seesaw main oscillating beam |
| Core Advantages | Maintenance-free; outdoor weather resistance; non-standard mold customization available; smooth rubber surface finish; long fatigue life |
| Certification | ROHS, REACH, IATF 16949 |
Product Advantages
Product Advantages
- Three-in-One Torsion-Elastic Structure: Integrates spring, damping, and pivot bearing functions in a single unit, eliminating complex traditional bearing-plus-spring mechanisms. Ideally suited for the reciprocating oscillation of seesaws.
- Weather-Resistant Rubber Compound: Formulated to resist UV radiation and temperature extremes, with low aging and cracking risk during long-term outdoor playground exposure.
- High-Strength Extruded Aluminum Housing with Precision Inner Core: Extruded 6061 aluminum profile provides structural rigidity; one-piece flange base simplifies installation. The square inner core is precision-machined, and the rubber contact surface is flat for improved fatigue resistance.
- Custom Mold Support: Non-standard dimensions available on request. Load capacity and length can be adjusted to fit various rocking and oscillation equipment. Tooling lead time: 6–8 weeks after drawing and parameter confirmation.
- Outstanding Cost-Performance Ratio: Performance matched to ROSTA DW-A, with pricing at one-third of the equivalent ROSTA unit. Field-replaceable alternative for OEM seesaw applications.
Installation Instructions
Align the flange base of the DW Type Rubber Suspension Unit with the mounting holes on the equipment foundation.
Tighten the base bolts to the specified torque; connect the square inner core to the seesaw oscillating member.
Verify oscillation travel; no lubrication required - the unit is ready for operation.
Application Scenarios & Precautions
Application Scenarios
Outdoor children's seesaws and rocking playground equipment
Industrial applications including vibrating screen suspension, belt tensioning, and vibrator motor pendulum supports
Precautions
- Do not exceed the rated load. Overloading causes permanent deformation of the rubber elastomers and degrades performance.
- Tighten mounting bolts to the torque specified in the engineering drawing. Insufficient torque can cause loosening under continuous oscillating loads.
- Avoid direct contact with strong acids or alkalis in outdoor installations to slow rubber aging.
- Inspect periodically. Replace the unit if the rubber exhibits cracking, hardening, or visible degradation.
- For custom-molded products, production begins only after drawings and load parameters are formally confirmed.
Performance Comparison
This DW Type Rubber Suspension Unit shares the same torsion-elastic working principle as the ROSTA DW-A suspension element: four pre-compressed rubber elastomers positioned between an outer housing and an inner square section rotated 45°, delivering spring, damping, and bearing functions in one maintenance-free component. Oscillation performance and load capacity are matched to the original DW-A, with no lubrication required. Price is one-third that of ROSTA DW-A. Non-standard customization is available; custom-molded units ship in 6–8 weeks. An ideal replacement for ROSTA DW-A in seesaw applications.
Company Profile
Langfang Ruidi New Materials Technology Co., Ltd
Langfang Ruidi New Materials Technology Co., Ltd. was founded in 1987. We specialize in the production and manufacturing of shock-absorbing, wear-resistant and sealing rubber components.
Our primary target industries include air conditioning & refrigeration, automotive, drainage pipeline and machinery sectors. We have built long-term and stable business partnerships with many well-known enterprises, such as AUX Air Conditioning and LG Electronics of South Korea.
Dedicated to developing a top-tier platform enterprise for eco-friendly rubber technology products, we are capable of mold design, processing and customization per customer requirements, delivering comprehensive rubber technical solutions for clients.
Our vision is to become a century-old enterprise that delights employees, satisfies customers and earns respect from society. We look forward to cooperating with industry partners to create a better society.
why choose our products?
Performance-Matched Replacement at One-Third the Price: The DW Type Rubber Suspension Unit delivers oscillation performance and load capacity equivalent to the ROSTA DW-A series, yet costs only 1/3 of the original - a direct, cost-effective drop-in alternative for seesaw and rocking equipment manufacturers.
Maintenance-Free, Outdoor-Ready Construction: The three-in-one torsion-elastic design integrates spring, damping, and pivot bearing functions in a single unit, while the anti-UV, weather-resistant rubber compound and extruded aluminum housing ensure reliable, lubrication-free operation in year-round outdoor playground environments.
Flexible Customization with Certified Quality: Non-standard mold customization is available for load, length, and fitment requirements (6–8 week tooling lead time), backed by ROHS, REACH, and IATF 16949 certifications to support playground equipment safety compliance.
Tianjin Ruidi International Trade Co., Ltd
Langfang Ruidi New Material Tecnology Co.,LTD
Our address
3001 Maoye Building, Haihe East Road, Hebei District, Tianjin 300140 P.R.China
Phone Number
+86 189 2034 6230
administrator@rubberproduct.net
Inner Pursuit . Altruism Green · Resilience
FAQ
Q1: Can dimensions be customized?
Q2: Will the rubber degrade quickly during long-term outdoor playground use?
Q3: Is this a direct replacement for ROSTA DW-A?
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