STAUFF Channel Rail Adaptor (Type CRA – Heavy Series)

Description

Operating Principle and Standards Compliance

The STAUFF Channel Rail Adaptor (Type CRA – Heavy Series) is an advanced engineering solution specifically designed to ensure the secure and reliable installation of hydraulic components. This element fully complies with the technical requirements of DIN 3015, Part 2, which governs the standards for the Heavy Series. The versatility of the component enables extremely precise mechanical coupling for STAUFF Groups 3S to 6S, corresponding to DIN Groups 1 to 4. The primary purpose of this adaptor is to ensure solid anchoring of clamps on multiple types of mounting rails, preventing vibrations and ensuring pipework retention, an essential requirement in industrial environments operating at extremely high pressures.

Construction Features and Material Specifications

From a construction perspective, the materials selected for the STAUFF Channel Rail Adaptor (Type CRA – Heavy Series) ensure long-lasting performance even in harsh environments. The standard option, identified by code W3, uses high-quality carbon steel with a zinc/nickel-plated surface treatment that increases protection against wear and oxidation. For chemical or marine sectors, the W5 alternative provides maximum protection through the use of V4A stainless steel, with metallurgical specifications 1.4401/1.4571 (corresponding to AISI 316/316 TI). The connection system offers two thread standards to suit global infrastructures: ISO Metric Thread (identified by M) and Unified Coarse Thread UNC (identified by U), ensuring precise mounting tolerances.

Compatibility with Channel Rails

The exceptional flexibility of the STAUFF Channel Rail Adaptor (Type CRA – Heavy Series) is demonstrated by its broad compatibility with the vast majority of commercially available profiles. For HALFEN, the adaptor supports HM 41/41, HZA 41/22, HZM 41/41, HZM 41/22, HL 41/41 and HL 41/82 geometries. For HILTI systems, installation is supported for MQ-21, MQ-41, MQ-52, MQ-72, MQ-21U, MQ-41U, MQ-72U, MQ-21D, MQ-41D and MQ-52-72D modules. Supported UNISTRUT infrastructures include the complete P family (P1000, P1000T, P1000V, P1000VT, P1001, P2000, P2000T, P3003, P3003T, P3300V, P3300VT, P3301, P4000, P4000T, P5000, P5000T, P5001, P5500, P5500T, P5501). It also integrates perfectly with the STAUFF Cushion Clamp Series range (SCS-048-1-PL, SCS-048-1GR-, SCS-120-1-PL, SCS-120-1GR-).

Fastening Hardware Dimensions and Mounting Requirements

The installation requirements and fastening hardware dimensions for the STAUFF Channel Rail Adaptor (Type CRA – Heavy Series) vary according to the dimensional group and whether cover plates are used. For assembly with AS hexagon head bolts and DPAL or DPAS cover plates, Groups 3S, 4S and 5S respectively require M10x40, M10x55 and M10x65 metric threads, or 3/8-16 UNC variants with lengths of 1-1/2, 2-1/4 and 2-3/4 inches. If the plates are omitted and IS hexagon socket head cap screws are used, the lengths are reduced to M10x25, M10x40 and M10x50 (or UNC lengths of 1, 1-1/2 and 2 inches). Group 6S requires larger fastening hardware: M12x100 (with plate) or M12x75 (without plate), with corresponding 7/16-14 UNC equivalents of 3-3/4 and 3 inches. For correct insertion, the mounting rails must meet precise geometric requirements: upper opening between 22 and 28 mm, lip thickness between 6 and 7.5 mm and a minimum internal depth of 20 mm.

Summary Technical Table of the Main Features of the STAUFF Channel Rail Adaptor (Type CRA – Heavy Series)

Product Codes