Open center control block in mono block design MO-16, 22, 32

Transcription

1 Open center control block in mono block design MO-,, 3 RE 35 Edition: 0.0 Replaces: Sizes,, 3 Series X Maximum working pressure on the pump side 350 bar on the consumer side 0 bar Maximum flow MO-: l/min MO-: 00 l/min MO-3: l/min Features Valve control in accordance with the /3-way principle rake spool for hydrostatic travel drive Large fine control range for flow control with progressive flow characteristic High pressure carry-over feature for downstream consumers when using C port (separation of by-pass line from tank line) Low internal leakage due to fitted main spool Main spool with automatic air bleed possible Contents Functional description echnical data Ordering code 5 Characteristic curves 7 Dimensions Related documents Design Mono block with to consumer axes ype of actuation Hydraulic Electro-hydraulically ressure limitation rimary pressure relief valve in the supply line Secondary pressure relief valves/feed valves in stacking element design Fields of application Excavators Mining excavators Drilling equipment Cranes RE 35/0.0, osch Rexroth G

2 MO-,, 3 Control block Functional description Functional description High pressure mobile control blocks of type MO are directional valves of mono block design. hey provide fine control of the speed and flow direction. he valves are optionally actuated hydraulically or electrohydraulically. he control blocks of type MO consist mainly of the housing (), the main spool () with optionally installed load holding valves 3), the actuation element (), the return springs (5), mounted feed valves () (optional) and mounted secondary pressure relief valves (7) (optional). he /3-way valves combine the function of a /3-way directional valve and a /-way directional valve. In non-actuated state, the main spool () is kept in the initial position by the return springs (5). In this position, the connection from the pump to the consumer is closed, the /-way part is open and allows fluid to flow without pressure from to (free circulation). If the main spool () is moved out of its initial position, the connection from the pump to the consumer is opened throttled via precision grooves (negative overlap). he pump pressure increases. When the pressure at the consumer port is reached, the load holding valve (3) opens and the hydraulic fluid begins to flow to the consumer. s the main spool () continues its movement, the opening to the reservoir takes place via precision grooves for the hydraulic fluid coming from the consumer and the flow is gradually fed from the /-way line to the consumer channel (fine control). Spool travel he spool travel is divided into approx. 30% control land overlap and 50% fine control range, while the remaining stroke serves to create the full opening cross-section. he overlap and a low spool tolerance serve to reduce internal leakage. Due to the large fine control range, the consumers can be sensitively controlled. rake spool Use in hydrostatic travel drive of tracked vehicles as fully automatic control break in both directions of travel. Friction-locked, cavitation-free downhill driving is achieved by controlling the outlet cross section depending on the supply pressure. ressure setting of the primary and secondary valves he specified pressure values are set as follows: direct operated pressure valves at a flow of to 3 l/min pilot operated pressure valves at a flow of l/min. Circuit types Number of spool axes Size ossible circuit type Ordering code / 3 MO- ////3 ////3// ////3 M / MO- 3 ////3 ////3 M / 3 ////3 3 MO-3 3 ////3// ////3 M //3 L // = parallel circuit = tandem circuit Control characteristics, actuating forces Uniform quality of the control characteristics and low actuating forces are achieved through optimum design of the metering edges in the housing, favorable shape of the metering notches and fitting of the main spool with constant clearance. osch Rexroth G, RE 35/0.0

3 Control block MO-,, 3 Functional description 3 Sectional view Housing Main spool 3 Check valve (see symbol) ctuation element 5 Return springs Feed valve 7 Secondary pressure relief valve rimary pressure relief valve (see symbol) 5 7 hreaded port SE port C C Version R (standard) ort on the consumer side (only when no port C is required). Version C y-pass channel is separated from the tank line. With version K, port C is present; however, it is closed by a threaded plug. If you need port C, you must screw in a separating plug between the and channels. Symbol example of a hydraulically operated -spool block, version R or K With version R, the circulation and return flow go into a reservoir. 3 a b With version C, the tank line is separated from the by-pass channel a b C RE 35/0.0, osch Rexroth G

4 MO-,, 3 Control block echnical data echnical data General MO- MO- MO-3 Number of consumer axes Weight without secondary valves Hydraulically operated kg Installation position ny Line connections See dimensions on page mbient temperature range θ C 0 to +0 riming One-coat paint RL 50 Hydraulic Maximum working pressure at port Maximum pilot pressure at port, C, X p bar 350, p bar 0 p bar 30 L p 0 st p bar 0 a, b p bar 30 Maximum flow q V l/min 00 MO- MO- MO-3 Hydraulic fluid Mineral oil (HL, HL) according to DIN 55, other hydraulic fluids, e.g. HEES (Synthetic ester) according to ISO 530 and hydraulic fluids as specified in data sheet 90, on request Hydraulic fluid temperature range θ C 0 to +0 Viscosity range ν mm /s to 30 Maximum admissible degree of contamination of the hydraulic fluid Cleanliness level according to ISO 0 (c) Recommended hydraulic pilot controls H see data sheet 55 Class 0//5, we recommend a filter with a minimum retention rate of β 75 H5/ see data sheet 555 Control curve no. 0 } H7 see data sheet 55 Note lease contact us if the unit is to be used outside the specified range of values. he technical data was determined with a viscosity range of ν = mm /s and a temperature of θ = 50 C. osch Rexroth G, RE 35/0.0

5 Control block MO-,, 3 Ordering code 5 Ordering code Short type Spool axis dditional information MO X / st spool axis nd spool axis 3rd spool axis th spool axis / * Short type 0 Number of spool axes,, 3 or 0 Series control block MO MO 03 Size Size Size Series to 9 (unchanged installation and connection dimensions) X rimary pressure limitation ) 05 Without Q ressure relief valve, pilot-operated V 000 ressure/feed valve with pressure sequencing stage ressure/feed valve with pressure cut-off stage L Circuit type (for possible combinations of circuit types, see page ) 0 andem circuit arallel circuit arallel circuit, final axis in tandem circuit M Mixed circuit L Spool type ) Specified pressure for pressure limitation and pressure sequencing/ cut-off stage in bar, 3-digit RE 35/0.0, osch Rexroth G

6 MO-,, 3 Control block Ordering code ype of actuation 0 Hydraulic H Electrohydraulically proportional ) Electrohydraulically switchable ) W W Secondary valves for - and -side ) MO- MO- MO-3 09 Without Z ressure/feed valve, pilot operated, size H ressure/feed valve, pilot operated, size 3 F ressure relief valve, direct operated size ressure relief valve, direct operated size R ressure relief valve, direct operated size + feed valve size G ressure relief valve, direct operated size + feed valve size Feed valve size E Feed valve size S Cover plate for secondary valve mounting face size Cover plate for secondary valve mounting face size U ank port With tank port R With tank port and pressure port C for downstream consumers (not possible with tank port on the consumer side, ordering code V) With tank port and variable pressure port C for downstream consumers (C port closed by means of a threaded plug) C K Line connections ipe thread according to DIN EN ISO 79 0 Small flange port according to DIN ISO 3) Large flange port according to DIN ISO 3) ump port position 3 ump port on secondary valve side S ump port on the consumer side V ank port position ank port on secondary valve side S ank port on the consumer side (not possible with version C) V Installation position (standard) 5 Designation of installation position from horizontal. his parameter fixes the position of the air bleed. 3 Sealing material FKM (fluoroelastomer) V NR (nitrile rubber) M 7 Further specifications in plain text ) he standard version is pilot valves with manual actuation ) With MO- and 3, you cannot assign secondary valves of different sizes together; rather, this is only possible by pairs per spool axis. Setting up secondary valves, R, S and the cover plate U next to one another on the subsequent spool axis in each case is not possible with MO-. Specified pressure in bar, 3-digit. 3) referred type with flange according to DIN ISO - (350 to 00 bar) except for NG 3 port according to DIN ISO - (35 to 350 bar); refer to the dimensions on page = vailable = Not available * osch Rexroth G, RE 35/0.0

7 Control block MO-,, 3 Characteristic curves 7 Characteristic curves Δp q V - flow curves in central position (free circulation) MO- ressure difference [bar] fold 3-fold -fold -fold MO- ressure difference [bar] fold 3-fold -fold -fold MO-3 ressure difference [bar] fold 3-fold -fold -fold Note Characteristic curves measured at ν = mm²/s and θ = 50 C). RE 35/0.0, osch Rexroth G

8 MO-,, 3 Control block Ordering code Characteristic curves for ype MO- Δp q V - flow curves,, Symbol 00 (0) ressure difference [bar] / / / / Symbol 005 Symbol 00 (009) Δp q V - flow curves,, (symbol 00 only) Symbol 00 0 / ressure difference [bar] / Symbol 003 / / Note Characteristic curves measured at ν = mm²/s and θ = 50 C). osch Rexroth G, RE 35/0.0

9 Control block MO-,, 3 Ordering code 9 Characteristic curves for ype MO- Δp q V - flow curves ressure difference [bar] 0,, / / / / Symbol 00 (0) Symbol 005 Symbol 00 (009) Δp q V - flow curves,, ressure difference [bar] (symbol 00 only) / / / / Symbol 00 Symbol Note Characteristic curves measured at ν = mm²/s and θ = 50 C). RE 35/0.0, osch Rexroth G

10 MO-,, 3 Control block Ordering code Characteristic curves for ype MO-3 Δp q V - flow curves, ressure difference [bar] 0 0 0, 00 / 300 / / / Symbol 00 (0) Symbol 005 Symbol 00 (009) Δp q V - flow curves,, 3 (symbol 00 only) ressure difference [bar] / / / / Symbol 00 Symbol Note Characteristic curves measured at ν = mm²/s and θ = 50 C). osch Rexroth G, RE 35/0.0

11 Dimensions [mm] Control block MO-,, 3 Dimensions Dimensions MO a 3 3 b Hydraulic actuation H ir bleed screw, attachment depends on the installation position of the control block relative to the horizontal M = Nm 3 ressure port C for downstream consumers, with this version, tank port is on the secondary valve side ank port on secondary valve side 5 ank port on the consumer side (not possible with version C) Mounting surface for secondary valve (see pages to ) 7 Dismounting dimension for primary pressure relief valve ump port on secondary side 9 ump port on the consumer side hree fixing holes Ø = ump = Reservoir 5 5.5, = Consumers a, b = ilot pressure Number of spool axes L L L3 a b L a b L L Line connections Flange ports according to DIN EN ISO -, pressure stage 000 SI ort,, C L a, b, X 0 G 3/ G 3/ G G / G / DN 9 (SE / in) DN 9 (SE / in) DN 3 (SE 3/ in) G / G / DN 3 (SE 3/ in) DN 9 (SE / in) DN 3 (SE 3/ in) G / G / RE 35/0.0, osch Rexroth G

12 MO-,, 3 Control block Dimensions Dimensions [mm] MO a 5 5 b 3 9 Hydraulic actuation H ir bleed screw, attachment depends on the installation position of the control block relative to the horizontal M = Nm 3 ressure port C for downstream consumers, with this version, tank port is on the secondary valve side ank port on secondary valve side 5 ank port on the consumer side (not possible with version C) Mounting surface for secondary valve (see pages to ) 7 Dismounting dimension for primary pressure relief valve ump port on secondary side 9 ump port on the consumer side hree fixing holes Ø.5 5 = ump 39 = Reservoir , = Consumers a, b = ilot pressure Number of spool axes L L L3 3 0 a b L 5 a b 5 L L Line connections Flange ports according to DIN EN ISO -, pressure stage 000 SI ort,, C L a, b, X 0 G G G / G 3/ G / DN 9 (SE 3/ in) DN 9 (SE 3/ in) DN 5 (SE in) G 3/ G / DN 5 (SE in) DN 9 (SE 3/ in) DN 5 (SE in) G 3/ G / osch Rexroth G, RE 35/0.0

13 Dimensions [mm] Control block MO-,, 3 Dimensions 3 MO a 0 0 b 3 5 Hydraulic actuation H ir bleed screw, attachment depends on the installation position of the control block relative to the horizontal M = Nm 3 ressure port C for downstream consumers, with this version, tank port is on the secondary valve side ank port on secondary valve side 5 ank port on the consumer side (not possible with version C) Mounting surface for secondary valve (see pages to ) 7 Dismounting dimension for primary pressure relief valve ump port on secondary side 9 ump port on the consumer side hree fixing holes Ø3.5 5 = ump = Reservoir , = Consumers a, b = ilot pressure Number of spool axes L L L a b L 57 a b L L Line connections Flange ports according to DIN EN ISO -, pressure stage 000 SI; port according to DIN EN ISO -, pressure stage 3000 SI ort,, C L a, b, X DN 3 (SE / in) DN 3 (SE / in) DN 3 (SE / in) G / G / RE 35/0.0, osch Rexroth G

14 MO-,, 3 Control block Dimensions Dimensions [mm] Secondary valves NG G E 3 L L 3 9 L5 L 50 E.5 L H MO- With port SE 3/ in, you can only set up secondary valves H, E, K and cover plate on the adjacent last spool axis. With port G, you can set up all secondary valves on the adjacent last spool axis except for K. MO- With port SE in, you can set up all secondary valves except for K,, R, S and cover plate U on the adjacent last spool axis. With port G /, you can set up all secondary valves on the adjacent last spool axis except for K, and R. = ump = Reservoir, G 9 H 7 Size L L L3 L L5 L MO MO osch Rexroth G, RE 35/0.0

15 Dimensions [mm] Control block MO-,, 3 Dimensions 5 Secondary valves NG L 3 R S L 3 R MO- 3 With port SE in, you can set up all secondary valves on the adjacent first spool axis except for R. You cannot assign secondary valves of different sizes together; rather, this is only possible by pairs per spool axis. Setting up secondary valves, R, S and the cover plate U next to one another on the subsequent spool axis in each case is not possible. = ump = Reservoir 77 L L S U R 7 0 S U 0 3 Size L L L3 MO MO RE 35/0.0, osch Rexroth G

16 MO-,, 3 Control block Related documents Dimensions [mm] Secondary valves NG With port SE / in (3000 SI), you can set up all secondary valves on the adjacent last spool axis except for D. F F 7 F F 7 Related documents Further information on installation, commissioning, and operation can be found in the instruction manual 05-: Control blocks for mobile applications. osch Rexroth G Mobile pplications Zum Eisengießer 97 Lohr am Main, Germany el info.ma@boschrexroth.de osch Rexroth G 0. ll rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. he data specified within only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. he information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging. osch Rexroth G, RE 35/0.0