1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (724) 776-4970 FAX: (724) 776-0790http:www.sae.orgCopyright 1994 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001STANDARDSubmitted for recognition as an American National StandardJ1689ISSUEDNOV94Issued
4、1994-11HYDRAULIC POWER UNITS USED ON MACHINE TOOLS ANDEQUIPMENT FOR THE AUTOMOTIVE INDUSTRYForewordThis Document has not changed other than to put it into the new SAE Technical Standards Boardformat.Hydraulic power units provided to the automotive industry have historically been designed around a di
5、versity ofspecifications/standards that often do not meet cost or performance expectations. The automotive industry andmachine tool suppliers are pursuing common specifications that use worldwide industry standards as a base.These recommended practices represent a consensus of automotive users and p
6、ower unit manufacturers createdto compliment ISO, ANSI, and other industry hydraulic power unit standards and to provide more commonality.These recommended practices enhance:a. Reliabilityb. Value added designsc. New technologyd. Maintainabilitye. Commitment for zero leakage1. ScopeThis SAE Standard
7、 defines the expectations for free-standing, nonintegral, nonpressurized reservoir,flooded inlet type, industrial hydraulic power units used on machine tools and equipment for the automotiveindustry.These exclude power units used for intermittent and/or noncontinuous duty cycle and pressurized vesse
8、ls,such as accumulators and air over oil systems.Objectives were set and accomplished to develop a consensus of common features which enhance the powerunit performance, manufacturing quality, and maintainability. Some of those features are:a. Identificationb. Common sizes and constructionc. Conducto
9、rs and connectorsd. Pump/motor groupse. FiltersSAE J1689 Issued NOV94-2-2. References2.1 Applicable PublicationsThe following publications form a part of the specification to the extent specifiedherein. Unless otherwise indicated the latest revision of SAE publications shall apply.2.1.1 SAE PUBLICAT
10、IONSAvailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J518Hydraulic Flanged Tube, Pipe, and Hose Connections, Four-Bolt Split Flange TypeSAE J1926-1988Straight Thread O-Ring Boss PortSAE J2244Connections for Fluid Power and General UsePorts and Stud Ends with ISO 261 Threadsa
11、nd O-Ring Sealing2.1.2 ANSI PUBLICATIONSAvailable from ANSI, 11 West 42nd Street, New York, NY 10036-8002.ANSI B3.1.1Power PipingANSI B93.41M-1976(R1982)Requirements for Non-Integral Industrial Fluid Power Hydraulic Power UnitsANSI/(NFPA/JIC) T2.24.1-1991Hydraulic Fluid PowerSystems Standard for Sta
12、tionary IndustrialMachinery2.1.3 ISO PUBLICATIONSAvailable from ANSI, 11 West 42nd Street, New York, NY 10036-8002.ISO 6149-2 (SAE J2244/2)Connections for fluid power and general usePorts and stud ends with ISO261 threads and O-ring sealingPart 2: Heavy-duty (S series) stud endsDimensions, design, t
13、estmethods and requirementsISO 4406Hydraulic fluid powerFluidsMethods for coding level of contamination by solid particlesISO 6162Hydraulic fluid powerFour-screw split-flange connections for use at pressures of 2.5 MPa to40 MPa (25 bar to 400 bar)Type I metric series and type II inch series2.1.4 NEM
14、A PUBLICATIONAvailable from National Electrical Manufacturers Association, 2101 L Street, NW, Suite300, Washington, DC 20037.Nema MG1-11.012.2 Related PublicationThe following publications are provided for information purposes only and are not arequired part of this document.2.2.1 SAE PUBLICATIONSAv
15、ailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.SAE J1227-1986Assessing Cleanliness of Hydraulic Fluid Power Components and SystemsSAE J2066Filter and Filter Element for Hydraulic System(s) Used on Manufacturing and AssemblyEquipment2.2.2 ANSI PUBLICATIONSAvailable from ANSI, 11
16、West 42nd Street, New York, NY 10036-8002.ANSI B93.18-1978(R1987)Non-Integral Industrial Fluid Power Hydraulic ReservoirsANSI B93.2-1986Fluid Systems and ProductsGlossaryANSI B93.19-1972Hydraulic Fluid PowerParticulate Contamination AnalysisExtraction of FluidSamples from Lines of an Operating Syste
17、mANSI B93.30M-1980Hydraulic Fluid PowerContamination Analysis DataReporting Method2.2.3 DIN PUBLICATIONAvailable from Deutsches Institut fur Normung, Buggrafenstrasse 4, D-1000 Berlin 30,West Germany.DIN 24339Standards for ReservoirsSAE J1689 Issued NOV94-3-2.2.4 ISO PUBLICATIONSAvailable from ANSI,
18、 11 West 42nd Street, New York, NY 10036-8002.ISO 1000-1981SI units and recommendations for the use of their multiples and of certain other unitsISO 1219-1Fluid power systems and componentsGraphic symbolsISO 5598Fluid power systems and componentsVocabulary2.2.5 NFPA PUBLICATIONAvailable from NFPA, N
19、ational Fluid Power Association (NFPA), 3333 North MayfairRoad, Milwaukee, WI 53222-3219.NFPA/T2.10.1M-1978Metric Units for Fluid Power Applications3. Definitions3.1 Overhead Power UnitHydraulic power unit with pump(s) and motor mounted under reservoir. Pump/motorgroup can be inline with reservoir l
20、ength or when using multiple pumps and motors, the pumps and motors are90 degrees to the reservoir length.3.2 L-Shape Power UnitHydraulic power unit with reservoir elevated high enough to provide bottom entry forpump inlet connection. Pump(s) and motor mounted inline and alongside of reservoir.3.3 T
21、-Shape Power UnitSame as L-Shape but provides for multiple pumps and motors by mounting on bothsides of reservoir.3.4 Miniature Power UnitPower units as catalogued by various manufacturers with vertically mounted pumpand motor. Submerged pump with reservoir volumes up to 113.5 L (30 gal). Unique rec
22、ommended practicesfor these power units are detailed in 4.9.4. Requirements4.1 IdentificationAll power units shall have an identification nameplate stating: “This power unit meets orexceeds the latest revisions of ANSI/B93.41 and the recommended practices of SAE J1689“ (see Figure 1).SAE J1689 Issue
23、d NOV94-4-FIGURE 1IDENTIFICATION PLATE4.1.1 The identification plate shall be made of a metal, a minimum of 0.8 mm (0.031 in) thick with stamped oretched figures, or shall be engraved laminated plastic, a minimum of 1.6 mm (0.063 in) thick, having a lightsurface and a dark core.4.1.2 The identificat
24、ion plate shall be mechanically fastened to a raised pad that is in a visible location. The plateshall include the following information:A. System design operating pressure, kPa (psi)B. Maximum system operating temperature, C (F)C. Reservoir capacity, liters (gallons)D. Fluid type and viscosity rang
25、e, description, and ISO gradeE. Design maximum contamination level, ISO code (design target)F. Purchasers hydraulic drawing number, same as schematicG. Equipment suppliers name and serial numberH. Date of manufactureI. Flow for each pump, liters/min (gpm)4.1.3 Machines using more than one hydraulic
26、power unit shall designate the stations or operations being suppliedfrom each unit on the nameplate.4.1.4 Nameplate character size shall not be smaller than 6 mm (0.25 in).4.2 Construction(See Figure 2.)There are 7 reservoir sizes: SAE 10, SAE 20, SAE 40, SAE 60, SAE 80, SAE 100, SAE 120.SAE J1689 I
27、ssued NOV94-5-FIGURE 2STANDARD RESERVOIRS4.2.1 Reservoir material thickness shall be a minimum of:Ends and bottom: 4.5 mm (0.179 in) for all sizes.Top and sides: 3 mm (0.119 in) sizes 10 through 60 and 4.5 mm (0.179 in) sizes 80 through 120 (see Figure3).SAE J1689 Issued NOV94-6-FIGURE 3MATERIAL THI
28、CKNESS4.2.2 Reservoir feet are integral (see Figure 4).FIGURE 4INTEGRAL FEET4.2.3 Reservoirs shall use round, top mounted clean-out covers (see Figure 5).4.2.3.1 Reservoir sizes SAE10 through 60 are constructed with 349 mm (14 in) covers.4.2.3.2 Reservoir sizes SAE80 through 120 are constructed with
29、 476 mm (19 in) covers.SAE J1689 Issued NOV94-7-FIGURE 5CLEAN-OUT COVERS4.2.4 Top covers shall be mounted to a raised lip on the reservoir to prevent entry of contamination when cover isremoved (see Figure 6).4.2.4.1 Top covers shall have a seal that remains with the cover when removed.4.2.4.2 The c
30、over seal material shall be compatible with the fluids being used in the reservoir.4.2.4.3 Torque specifications (9 N-m (7 lb-ft) for the cover attachment bolts shall be identified on the covers.SAE J1689 Issued NOV94-8-FIGURE 6COVER RAISED LIP4.2.5 Power units frame material shall be (see Figure 7)
31、:Sizes 10 through 60: 50 mm (2 in) square tubing, minimumSizes 80 through 120: 75 mm (3 in) square tubing, minimum4.2.5.1 Alternative frame construction materials and methods may be considered, and/or encouraged, where thereis engineering evidence available resulting in noise reduction and/or other
32、enhancements. Materials andmethods should be appropriate to the design.4.2.6 Power units shall be a maximum height of 2.2 m (7 ft).FIGURE 7FRAME MATERIAL4.2.7 Power unit layout shall assign access dimensions for one side, one end, or both for components requiringpreventive maintenance services like
33、filters and accumulators (see Figure 8).SAE J1689 Issued NOV94-9-FIGURE 8EXAMPLE ACCESS LAYOUT4.2.8 Provision is made for engineering selection/preference of the items in Figure 9:FIGURE 9BAFFLE AND TOP COVERS OPTIONS4.2.8.1 Baffle cut-out dimensions, when used, shall be calculated to obtain a reser
34、voir circulation velocity of 61 cm(2 ft)/s at a volume rate equal to 50% of the reservoir volume (see Figure 10).SAE J1689 Issued NOV94-10-FIGURE 10BAFFLE CUT-OUT DIMENSIONS4.2.9 A stiffening “crease“ or “cross break“ in reservoir sidewall for noise attenuation is recommended (see Figure11).FIGURE 1
35、1STIFFENING CREASE4.2.10 Lifting provisions for handling of the power unit shall be included and attached to the containment tray orframework assembly. They shall not be attached to the reservoir (see Figure 12).FIGURE 12LIFTING PROVISIONSSAE J1689 Issued NOV94-11-4.2.11 System line connections to t
36、he reservoir should be through the top cover.4.2.11.1 Reservoirs shall have a spare return port (plugged) and a spare system drain port (plugged).4.2.11.2 Top cover connections should be minimized. Manifolds shall be used to join multiple drain and/or returnconnections. Only one line shall then be r
37、outed from the manifold to a single connection on the cover (seeFigure 13).4.2.11.3 Manifolds shall be mounted at, or adjacent to the machine.FIGURE 13RETURN AND DRAIN LINE MANIFOLDS4.2.11.4 Pump case drain(s) and gage drain(s) should be through the bottom of the reservoir. Provide labels toidentify
38、 connections on reservoir (see Figure 14).FIGURE 14PUMP CASE AND GAGE DRAIN CONNECTIONSSAE J1689 Issued NOV94-12-4.2.12 Connection for emptying of the reservoir shall be in the bottom (see Figure 15).4.2.12.1 The connection shall be M42 x 2 (ISO 6149) or SAE #16 (SAE J1926).4.2.12.2 The connection s
39、hall include a shut-off valve with plug.FIGURE 15RESERVOIR DRAIN4.2.13 Low levels dimensions are predetermined to fit the SAE reservoir sizes (see Figure 16).SAE J1689 Issued NOV94-13-FIGURE 16RESERVOIR LEVEL DIMENSIONS4.2.13.1 A level indicating label shall be placed adjacent to the visual sight le
40、vel gage (see Figure 17).FIGURE 17SIGHT GAGE LEVEL INDICATOR4.2.14 A visual sight gage shall be used that has a maintainability feature of being able to change the external gageassembly without draining fluid from reservoir (see Figure 18).SAE J1689 Issued NOV94-14-FIGURE 18SIGHT GAGE4.2.14.1 A sigh
41、t gage guard rail should also be included (see Figure 19).FIGURE 19SIGHT GAGE GUARD RAILS4.2.15 A low level sensor shall be installed in the clean-out cover (see Figure 20).4.2.15.1 Sensor should be two level sensing, minimum (low level warning and critical low level shutdown).4.2.15.2 Sensor shall
42、be located on the opposite cover from the return line.SAE J1689 Issued NOV94-15-4.2.15.3 Sensor shall be flange mounted.4.2.15.4 Sensor shall be connected with a customer approved plug-in type connection to facilitate cover removal.4.2.15.5 Electrical control logic should prevent power unit operatio
43、n when the plug-in connection is disconnected.FIGURE 20LOW LEVEL SENSOR4.2.16 Reservoirs shall be equipped with a port and bulb well for a temperature sensor (see Figure 21).4.2.16.1 The bulb well shall not incorporate NPT threaded means for installation.SAE J1689 Issued NOV94-16-FIGURE 21TEMPERATUR
44、E SENSOR BULB WELL4.2.17 Pump inlet connection, internal to the reservoir, shall have a raised lip. The lip should be a minimum of 25mm (1 in) (see Figure 22).FIGURE 22PUMP INLET CONNECTION4.2.18 Return lines to reservoirs shall include anti-siphoning provisions to prevent fluid siphoning to lower m
45、ountedcomponents.4.2.19 Reservoir breather rating shall be consistent with system filtration requirements, but shall not be greater than15 m.4.2.19.1 Reservoir breather shall be sized to flow a volume of air equivalent to four times the maximum return lineflow from the system.4.2.20 Provision is mad
46、e for engineering selection/preference of four containment tray options.SAE J1689 Issued NOV94-17-4.2.20.1 No tray4.2.20.2 Traditional stand with tray; material shall be minimum: (See Figure 23.)a. 3 mm (0.119 in); sizes 10 through 60b. 4.5 mm (0.179 in); sizes 80 through 120FIGURE 23TRADITIONAL PAN
47、4.2.20.3 4-hole tray; material shall be minimum: (See Figure 24.)a. 3 mm (0.119 in); sizes 10 through 60b. 4.5 mm (0.179 in); sizes 80 through 120SAE J1689 Issued NOV94-18-FIGURE 244-HOLE TRAYNOTE Stiffening of the traditional and 4-hole containment tray(s) is recommended for soundattenuation. Cross
48、 break or welded reinforcements are suggested methods.4.2.20.4 Trough type tray; material shall be minimum: (See Figure 25.).a. 4.5 mm (0.179 in); sizes 10 and 20b. 6.35 mm (0.250 in); sizes 40 and 60c. 9.5 mm (0.375 in); sizes 80 through 120SAE J1689 Issued NOV94-19-FIGURE 25TROUGH TYPE TRAY4.2.21
49、Engineering selection will provide mixing and matching of reservoirs to trays. Allowing for the recommendedpractice of providing service space, the matches in Figure 26 are suggested.NOTESee Figure 8 for example component access layout.SAE J1689 Issued NOV94-20-FIGURE 26CONTAINMENT TRAY SIZES AND CONFIGURATIONS4.2.22 When containment trays are specified, the tray should be sufficient in size to capture any fluid spillage thatmay occur during filter maintenance functions that could result in fluid release
