Group: Bucher
Catalog excerpts
Non-standard symbols used in the text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Identifying the rotation direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Recommended fluids/Allowed temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motor-pump coupling . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Open the catalog to page 2General information 1.1 Introduction to the product - carefully controlled heat treatments Gear pumps are widely used in modern hydraulic systems due to their high performance, long service life and low pur chase and maintenance costs. - increasingly tight coupling tolerances, and a high standard of surface finish. Product development has made it possible to achieve high operating pressures, excellent volumetric and mechanical efficiency, and lower noise levels, in operation, by means of: Bucher Hydraulics S.p.A. has achieved these results by constantly improving its design, control, and...
Open the catalog to page 31.2 Non-standard symbols used in the text Check nut Hexagonal-head screw ( TE screw) Lock washer Socket head screw (TCE screw) Dynamometric spanners Version with front and rear cover in cast iron, available Technical information 2.1 Identifying the rotation direction The rotation direction of a gear pump is identified by looking at the pump from the front and with the drive gear turned up wards (see figures below). Pumps with clockwise rotation (D) have a drive gear which turns clockwise, with the suction port on the left and the pressure port on the right. Pumps with counterclockwise...
Open the catalog to page 42.2 Recommended fluids/Allowed temperatures We recommend using only mineral oil-based hydraulic fluids that comply with the ISO/DIN standards. Operating temperature We also recommend that an adequate air filter be installed on the tank to prevent contaminating substances such as dust, sand, etc. from getting into the oil, as these substances can enter the tank through the air flow caused by the level variations in the tank itself.
Open the catalog to page 5Absolutely no radial or axial forces should be transmitted to the drive shaft in the motor-pump coupling. Such forces cause rapid and irregular wear on the balan cing surface of the bushings and gear support, with a con sequent worsening in pump performance. The coupling joint must be able to absorb any discrepancies in the coaxial alignment of the motor-pump shafts without placing any load on the pump shaft. In the couplings between splined shafts, the connecting sleeve must be free to move along its axis. The length of the sleeve must be sufficient to cover the splined sections of the...
Open the catalog to page 62.6 General precaution In addition to the recommendations regarding fluids, filtration, coupling, etc., we suggest the following: - Always check the rotation direction of the pump's drive shaft; it must be compatible with the rotation direction of the pump itself. - Be particularly careful in cleaning and make sure, when connecting the suction and pressure piping, that no chips, rag threads, teflon tape, etc. get into the pump circulation system. - Check the tightness of the suction and pressure fittings, the correct positioning of the O-Ring, and make sure there is no dirt between the...
Open the catalog to page 72.8 Calculating the specification of a gear pump The following parameters are defined: Vc = (cm3/r) pump displacement; n = (r/min) no. of rpms of the drive shaft; Q = (l/min) flow rate; p = (bar) operating pressure; T = (Nm) drive torque; N = (kW) power; (%) volumetric efficiency; (%) mechanical efficiency; Important: Please contact our Sales Department if even one of the operating limits indicated in the tables below (temperature, pressure, rpm) is exceeded, as well as in the case of two or more maximum values at the same time, or for applications with particularly heavy-duty cycles.
Open the catalog to page 8Gear pump group AP05 AP/APR05 Max torque allowed to the shaft Last number of pump code Notes: - For uses at the operating limits, see note in section 2.8 - For the types of pumps without ordering code, contact our Sales Dept.
Open the catalog to page 11The drawing shows a pump with clockwise rotation.
Open the catalog to page 17The drawing shows a pump with clockwise rotation.
Open the catalog to page 22The drawing shows a pump with clockwise rotation.
Open the catalog to page 233.1 Pumps seal kit NBR standard type
Open the catalog to page 24© 2015 by Bucher Hydraulics S.p.A, I-42124 Reggio Emilia 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 right to amend the product specifications contained in this catalogue. Classification: 410.110.000
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