www.jbj.co.uk/couplings.html#flender 3 #DriveLineHarmony N-ARPEX ARN-6/-8/-10 Series Introduction Torsionally Rigid All-Steel Couplings The plate packs of the N-ARPEXARN series are designed with hexagon, octagon and decagon plates, depending on the coupling size. The number of screw connections is indicated in the denomination of the ARN-6/-8/-10 series. Hexagon plates have 6 bolting points, octagon plates have 8 bolting points and decagon plates have 10 bolting points. The hexagon plates, octagon plates and decagon plates up to size 631 are designed as ring plates. Sizes 694 to 988 are designed as segmented plates. Plate-pack designs Plate pack screw connection In theARN-6 series the plate pack screw connection on N-ARPEX couplings is designed in the formof a close fitting screw connection. In theARN-8 andARN10 series a conical bolt connection by Flender is used. The advantage of this screw connection is the considerably simplified installation in the case of large screw connections. Screw connection / ARN-6 series Size 86-6 – 343-6 Screw connection / ARN-8 series Size 219-8 to 354-8 Screw connection / ARN-8 /-10 series Size 387-8 to 631-8 / Size 495-10 to 988-10 Size 86-6 to 343-6 (hexagon plates) Size 219-8 to 631-8 (octagon plates) Size 495-10 to 631-10 (decagon plates) Size 694-10 to 988-10 (decagon plates/segment)
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