High Pressure Gear Pumps KP 0

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1 High Pressure Gear Pumps KP 0

2 Design of KP 0 gear pumps Description According to its design, the Kracht KP 0 external gear pump belongs to the type of so-called gland type pumps. The essential functional elements, gearing and bearing glands are located in an aluminium housing of high-strength extruded alloy, which is limited laterally by the the cover plate and flange cover. The gearing, made of case hardened steel with surface hardening, consists of the drive shaft wheel and pin wheel. The highest manufacturing quality is guaranteed by shaving the tooth flanks. The shaft journals are finely ground. Due to the high number of teeth (n = 12) and the special tooth shape, a considerable reduction in design-related volume flow fluctuation and the associated pressure pulsation is achieved. Technical information 1. External forces External forces acting on the drive shaft end have an influence on the operation of the bearing glands. Radial and axial forces are not permissible. An end bearing must be used for the purpose of absorbing external forces. 2. Direction of rotation The following definition applies to the direction of rotation, looking at the end of the drive shaft: Shaft with right-hand rotation: pumping direction from left to right. Shaft with left-hand rotation: pumping direction from right to left. General parameters Fixing type Flange fixing Pipe connection Threaded connection Direction of rotation Right or left Weight See dimensional sheets Installation location Any Ambient temperature ϑ u min = 20 C ϑ u max = + 60 C Operating parameters Operating pressure Suction side p e min = 0,3 bar (underpressure) p e max = 2 bar Short-run p e max = 2.5 bar Pressure side p max = see technical data Fluid temperature ϑ m max = 85 C Viscosity range ν min = 12 mm 2 /s ν max = 800 mm 2 /s Recommended oil cleanness Class 19/16 according to ISO / DIS 4406 Class 10 according to NAS 1638 Recommended filtering Filter with filtration quotient β for 280 bar Recommended β for 100 bar viscosity range ν = mm 2 /s Rate of flow see table page 3 Drive capacity see table page 3 Working substances Mineral oil according to DIN 51524/25 Engine oil according to DIN Bio-oils from the HEES group can be used up to 70 C and at approx. 20 % reduced maximum pressure (please enquire) Materials Housing Bearing arrangement Shafts and gear wheels Seals Technical data Time / pressure chart Pressure p p max p N p D Capacity Rated quantity Aluminium Gland with multi-material plain bearings Surface-hardened and ground case-hardened steel according to DIN NBR Capacity Geom. Max. Nominal Continuous Max. rated quantity capacity pressure pressure pressure speed V g p max p N p D n max cm 3 /r bar bar bar 1/min Max. pressure = Pressure peak Nominal pressure pn < 6s = 50 % continuous duty See time / pressure chart Max. number of switching actuations: 30 / min Pressure data apply for ν 30 mm 2 /s 0,1 1 2 t(s) Time Minimum speed at p = bar 1/min KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (23 92)/ Internet: info@kracht-hydraulik.de

3 Calculation formulae for hydro pumps Parameters, symbols, units 1. Rate of flow / absorbing volume Q l/min 2. Geom. capacity / absorbing volume V g cm 3 /r 3. Pressure p bar 4. Speed n 1/min 5. Moment M Nm 6. Power P kw 7. Overall efficiency η tot 8. Volumetric efficiency η vol 9. Hydr./mech. efficiency η hm 10. Velocity of flow v m/s 11. Pipe diameter d mm General Q th = V g n, η tot = η vol η hm, M= 9549 P, v = Q n d 2 Standard values for KRACHT products at nominal operating point KP 0 η tot η vol Parameters for: Output Moment Volume flow n M P Rate of flow Q = Drive moment M = Driving power P = p Q Pump V g n η vol 10 3 l min p V g 20 π η hm [Nm] p Q 600 η tot [kw] 1 to to Rate of flow at n = /min Rate of flow Q in l/min at 34 mm 2 /s Pressure p in bar Rated quantity Rated quantity Required drive capacity at n = /min Pressure p in bar KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (2392)/ Internet: info@kracht-hydraulik.de 3

4 Type key Product name Shaft ends M taper 1: 8 Pump size 0 Capacity Rated quantity 1 / 2 / 3 / 4 / 6 / 8 2nd shaft end 0 none Cover plate A Cover plate (standard type) KP 0/. K. 0 S M 0 A 8 M L 1 Flange cover type K Square 4-hole flange LA = 52,4/72; Ø z = 25,4 Direction of rotation 1 clockwise 2 anticlockwise Outboard bearing 0 without Design code number 8 (internal allocation) Material code M Housing in aluminium with bearing bushes Gearing type L Made of casehardened steel Housing connection S Suction and pressure connection G 3/8 V g 1-4 G 1/2 V g 6-8 Seals 1 NBR rotary shaft lip seal ϑ 85 C Multiple pump combinations Motors Other shaft and flange types Viton rotary shaft lip seal possible on request 4 KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (23 92)/ Internet: info@kracht-hydraulik.de

5 Type K-flange, tapered shaft Taper 1: 8 Inlet port Outlet port Order example: KP 0/1 K10S M0A 8ML1 Displayed direction of rotation: right With left-handed direction of rotation, suction and pressure connection will be opposite Shaft: Taper 1: 8 Bell housing Nominal Displacement A B C 3/8 BSP 1/2 BSP Weight kg Bell housing with ventilation or leakage hole on request Type Motorsize Bell housing Coupling A B C D F K L N P weight size Z0/160/ M8 0.6 kg RA19 K16/10-Z25/14 Z0/200/ M kg RA19 K16/10-Z25/14 Z0/200/ M kg RA19/24 K16/10-Z25/14 Z0/250/ / M kg RA24/28 K16/10-Z30/28 KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (23 92)/ Internet: info@kracht-hydraulik.de 5

6 Couplings Type A L Type B L Teil 1 Teil 2 Teil 1 Teil 3 DH D dh D DH D dh D1 s b s Taper 1 : 8 s b s M1 M M1 M Taper 1 : 8 l1 E l Sprocket in polyurethane with 92 Shore hardness Colour: yellow l1 E l Coupling size Coupling hub length and hub borehole tapered on pump side Order code: RA 19 K 16/10 Z 24/14 Coupling hub length and hub borehole cylindrical on motor side Coupling Weight Mass Initial Finished borehole Dimensions Order size moment borehole code of inertia min. min. max. max. part part part part part part kg kgm l l 1 E s b L M M 1 D H D D 1 d H Type A RA 19-K16/10-Z 25/14 Type B 19/ RA 19/24-K16/10-Z 25/14 24/ RA 24/28-K16/10-Z30/28 Operating temperature: 40 C to + 90 C (brief temperatures up to C are permissible) Weights and Mass moments of inertia refer to max. finished borehole without groove. Finished borehole according to ISO Fit H7; Keyways according to DIN 6885 Page 1 RA: Hub material Al 6 KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (23 92)/ Internet: info@kracht-hydraulik.de

7 Pump with motor Motor size Power Operating Bell housing Coupling Weight speed Motor 4-pole E-Motor 4-pole Bell housing kw 1/min kg kg 71 M4A Z0/160/70 RA 19 K16/10 Z25/14 71 M4B M4A Z0/200/80 RA 19 K16/10 Z25/14 80 M4B S4A Z0/200/90 RA 19/24 K16/10 Z25/14 90 L4A L4A L4B Z0/250/104 RA 24/28 K16/10 Z30/ M4B Motor size Dimensions in mm L a 1 a b g h L 1 p s w S L Motor frame sizes are based on Schäfer. Other manufacturers motors can be supplied on request as IMB 35. KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (23 92)/ Internet: info@kracht-hydraulik.de 7

8 Overview of our complete programme Transfer pumps Volutronic Mobile hydraulics Industrial hydraulics Transfer pumps for lubricating oil supply equipment, low pressure filling and feed systems, dosing and mixing systems, including PUR. Gear flow meters and electronics for volume and flow metering technology in hydraulics, processing and laquering technology. Single and multistage high pressure gear pumps, hydraulic motors and valves for construction machinery, vehicle-mounted machines. Cetop directional control and proportional valves, hydraulic cylinders, pressure, quantity and stop valves for pipe and slab construction, hydraulic accessories for industrial hydraulics (mobile and stationary use). With our decades of experience, we are at your side, world-wide, for the professional mastery of specific applications and complete solutions in hydraulics and process technology. KP 0.e KRACHT GmbH Gewerbestr. 20 D Werdohl Tel (23 92)/935-0 Fax 0049 (23 92)/ Internet:

High Pressure Gear Motors KM 1

High Pressure Gear Motors KM 1 2 KRACHT GmbH Gewerbestr. 2 58791 Werdohl, Germany fon +49()23 92/935- fax +49()23 92/935 29 mail info@kracht.eu web www.kracht.eu Construction 1 5 8 9 1 2 6 4 7 3 1 Housing