Stiction of seals
inactivity, the oil film under the seal is squeezed away allowing dry friction to predominate (Figure H 2) . Stiction of seals is particularly evident during stick-slip movements and during oscillating movements [...] movement, which means the whole process is affected by dry friction. Figure H 1: Stribeck curve Figure H 2: Stiction depending on the period of inactivity a) polyurethane, b) NBR, c) fabric
Tachogenerator
Figure T 2 ). Advantage: Low maintenance Disadvantage: Measurement voltage must be rectified; not suitable for low rotation speeds. Figure T 1: Principle of a direct current tachogenerator Figure T 2: Principle
Cascaded (multi loop) control system
position, one or more other variables such as the velocity and/or acceleration are also fed back (Figure K 2) . The decisive factor is the type of feedback involved. With the cascaded (multi loop) control system [...] cascaded (multi loop) control systems have not fared very well compared with state controllers . Figure K 2: Signal flow diagram for a cascaded (multi loop) control system
Annular gear pump/motor
another and that the rotor has one tooth less than the gear ring (e.g. 6 as opposed to 7 (Figure Z 2). During the movement of a rotor teeth from one hole in the ring to another, each chamber fills and [...] (up to around 160 bar). The best-known design of the annular gear motor is the orbit motor . Figure Z 2: Principle of an annular gear pump/motor
Switching methods for hydraulic pumps
). Series circuit : Pump 1 leads to pump 2. This circuit is used to improve the filling of a high-pressure pump or to reach a higher output pressure at pump 2 (e.g. in the case of some internal gear pumps
プレス
該当件数 24 < 1 2 > < 1 2 > 11.05.2022 HAWE Hydraulik consistently makes production climate-neutral The roadmap sounds ambitious: HAWE has set itself the goal of being climate neutral in Scope 1 and 2 throughout [...] Thursday HAWE stopped all business activities with Russia as a consequence of the required sanctions. < 1 2 >
Valve
valves (lengthwise) and rotary valves ( Figure V 5 ), working method: specified switching positions (2-position directional valves, check valves, 3-position and multiple position directional valve), adjustable [...] position (manually operated directional valves), continuously adjustable valves ), controlled ports: 2-way, 3-way, 4-way valves and more; actuation (types): manual, mechanical, pressure (hydraulic, pneumatic)
Parallel circuit / connected in parallel
starts the movement ( Figure P 2 ). The next actuator only follows suit when the pressure at this point increases. Figure P 1: Resistances connected in parallel Figure P 2: Parallel circuit containing three
AN
ダウンロード Configurator カタログシート HAWE コンパクト - コンパクトカタログ: HAWE Kompakt データシート 2系統吐出ポンプ / デュアルフローポンプタイ プ AN, AL, NA用接続ブロック: D 6905 A/2 技術データ - タイプ NA - アドオンバルブ サイズ 21, 31 ねじタイプ, プレートタイプ 回路圧力 700 回路圧力(低圧) 150 [...] ダウンロード Configurator カタログシート HAWE コンパクト - コンパクトカタログ: HAWE Kompakt データシート 2系統吐出ポンプ / デュアルフローポンプタイ プ AN, AL, NA用接続ブロック: D 6905 A/2 [...] 製品タイプ ポンプユニット用接続ブロック タイプA 製品説明 接続ブロックタイプAN、ALとNAは、2系統吐出ポンプ / デュアルフローポンプに対応しています。これには、圧力制御バルブと、一つまたは二つのシャットオフバルブが含まれます。方向切換バルブは、一部内蔵式であるか、フランジ接合あるいは導管を敷設することができます。 中間ブロックは、シャットオフバルブを経由して二段ポンプの流量を統合すること
Single resistor
Fluidlexikon Single resistor Term used occasionally for 2-way plug-in valves.