Rotary Joint, DPR 280 K 91, 1112460-091, Christian Maier GmbH & Co. KG
Universal equipmentPrice on request
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Description
Rotary joint for cooling water and hot water. Large Series DP 65-100. Two‑way flow, designed for rotating inner pipe (directly borne in housing). Nominal size DN 80. Rotor connection: K‑flange with centring face and gasket sealing (for DN 40 and larger). Housing connection: radial G 2 female thread (B1) and NPT 2 (B2). Seal combination 1 (synthetic carbon 19K – chrome steel 18E). Medium: cooling water, hot water. Temperature range –10…140 °C, pressure range 0.2…10 bar, maximum speed 55000/DN ≈688 min⁻¹. Housing made of lacquered steel. Rotor made of stainless steel. Two ball bearings, factory‑lubricated, maintenance‑free up to 80 °C, for higher temperatures relubrication through easily accessible grease point required. Internal balanced mechanical seal, springs outside medium flow. Inner pipe supported in housing, no elbow required. Connection to rotating pressure system via K‑flange with sealing and centring face. Radial and axial housing connections with right‑hand female thread G/BSP (ISO 228) or NPT (ANSI). Anti‑rotation device. ATEX certification optional. Set of drain plugs fits Large Series.
Possible Applications
This rotary joint is specifically engineered for high-speed thermal management in heavy-duty rotating machinery where cooling or heating media must be transferred into a spinning shaft. It is primarily utilized in the paper and converting industry for drying cylinders and calendar rolls, as well as in the plastics industry for temperature-controlled chill rolls and extruders. Because the inner pipe is directly borne within the housing, the unit is ideal for applications requiring a compact, integrated design that eliminates the need for external elbows or complex piping configurations. The robust construction and balanced mechanical seal make it particularly suitable for demanding production environments where consistent thermal regulation is critical for maintaining product quality during continuous high-speed rotation.
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Specifications
| Category | Universal equipment |
| Product ID | 8211111697-2238 |
| Manufacturer | Maier |
