Rotary Joint, DPR 275 R 51, 1112583-051, 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 75. Rotor connection: right‑hand male thread G 3 (ISO 228). 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 ≈733 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 standardized connection piece 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 deployed in heavy industrial machinery requiring continuous fluid transfer between stationary supply lines and rotating components, most notably in large calendar rolls, paper manufacturing drying cylinders, and heavy rubber mixing mills. In these demanding environments, the unit reliably handles high-temperature cooling or heating media while accommodating the mechanical loads of a directly borne rotating inner pipe. Its robust internal balance and specialized carbon-to-chrome-steel seal combination prevent thermal shock and fluid leakage during intensive thermal processing cycles. Consequently, it integrates seamlessly into continuous web-handling equipment and metallurgical processing lines where thermal management of rotating drums is critical to product quality and operational continuity.
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Specifications
| Category | Universal equipment |
| Product ID | 8211111697-2229 |
| Manufacturer | Maier |
