QXP
8Pages

Catalog excerpts

Metering Pump for Polyurethane Production Series QXP • High-accuracy metering with very low pulsations, even at high pressures • Can be used with high and low viscosities and at variable speeds 1 Description The QXP pumps are the 5th generation of Bucher internal gear pumps, which have proven themselves in thirty years of service around the world. Continuous improvement of its simple and robust desing and further development of the manufacturing processes have made the pump lighter in weight and more compact in size without increasing stress to any of the individual parts. A new tooth profile, designed with the help of CAE offers a significant reduction in noise levels. Large sealing areas result in higher effi-ciencies. The internal gear ring is supported by a hydrody-namic/ hydrostatic lubricating film, which allows operation at low viscosities or low and high speeds. QXP pumps are therefore suitable for use with variable-speed drives, where they can provide variable deliveries.

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2.2 Main characteristics for pressure range 2 Effective displacement cm3/rev The main characteristics data are valid for fluids with 40 mm2/s 1) maximum pressure values apply for 20 - 100 mm2/s 2) theoretical value at max. permitted continuous pressure for mineral oil 3) theoretical value for max. continuous pressure calculated at 40 mm2/s

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4) for SAE J518 Code 61 or ISO 6162-1 pipe flange dimensions (see section 6) 5) or other shaft ends, contact Bucher Hydraulics 6) threaded port to DIN 3852, Part 2 7) pressure port to SAE J 518 Code 61 or ISO 6162-1can be supplied for pressure ranges 2+3 8) at QXP22-003 and QXP22-004 : L = 113 ; M = 51

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Frame size Pressure range Rotation viewed from shaft end Variants / options (Cores used by demanufactures for options, see section 4.2 for a selection) Ordering example: Required: Displacement: Continuous pressure: for use with polyol Ordering code: 4.1 Standard configuration • direction of rotation - right (CW) • 2-hole mounting flange to ISO 3019/1 (SAE): sizes QXP 3-6 • 2-hole mounting flange to ISO 3019/2 (metr.): sizes QXP 2+8 • FPM (viton) seals • parallel shaft end to ISO/R775 4.2 Special features 358 = for components Polyole, Isocyanate und Additives ports for liquid sealing...

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5 Note This catalogue is intended for users with specialist knowledge. The user must check the suitability of the equipment described herein in order to ensure that all of the conditions necessary for the safety and proper functioning of the system are fulfilled. If you have any doubts or questions concerning the use of these pumps, please consult Bucher Hydraulics. 6.1 Pipe flange - high pressure type for up to 420 bar - SAE JS18 Code 61 3 Threaded pipe flanges are spot-faced for DIN 2353 pipe fittings Material: ST37 For Viton seals, contact Bucher Hydraulics

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Retaining screws For Viton seals, contact Bucher Hydraulics 9) We recommend the use of seamless precision steel tube to DIN 2391 with-wallthick. max 6 mm info.kl@bucherhydraulics.com www.bucherhydraulics.com © 2015 by Bucher Hydraulics GmbH, D-79771 Klettgau All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual improvement, we reserve the...

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