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AA2FM80/61W-VUDN520 Bosch Rexroth High Pressure Motor Bent Axis Design

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AA2FM80/61W-VUDN520 Bosch Rexroth High Pressure Motor Bent Axis Design

Country/Region	china
City & Province	xiamen
Categories	Plastic Toys

Product Details

Product Description:

The Bosch Rexroth AA2FM80/61W-VUDN520 (R902137579) is a high-pressure motor characterized by its bent-axis design, which ensures efficient operation across a range of applications. This all-purpose motor is suitable for both open and closed circuit systems, making it versatile for various hydraulic requirements. With a sizeable nominal pressure capacity of up to 400 bar and a maximum pressure limit of 450 bar, the AA2FM80/61W-VUDN520 delivers robust performance and reliability. The motor boasts a large selection of nominal sizes, enabling precise customization for specific applications and ensuring optimal performance. It features an impressive high power density and maintains very high total efficiency, including high starting efficiency which is critical for operations requiring immediate response from standstill. Equipped with working ports that come in SAE flange or thread options, this motor caters to the requirements of the US market with its SAE version. For added functionality, it can come optionally equipped with an integrated pressure relief valve to protect the hydraulic system from excessive pressure. Additionally, there are options to mount additional valves such as counterbalance valves (BV/BVE), flushing, and boost pressure valves if needed by the application. The Bosch Rexroth AA2FM80/61W-VUDN520's design not only provides superior performance but also ensures durability and longevity even in demanding conditions. Its advanced engineering is indicative of Bosch Rexroth’s commitment to providing high-quality hydraulic components that meet the needs of various sectors requiring precision fluid power solutions.

Features:

Large variety of available nominal sizes allows exact adjustment to the application High power density Very high total efficiency High starting efficiency Working ports SAE flange or thread Optional with integrated pressure relief valve Optional with mounted addifitonal valve: counterbalance valve (BVD/BVE), flushing and boost-pressure valve Bent-axis design

Technical date :

Table of values

Size				10	12	16	23	28	32	107	125	160	180	250
Displacement geometric, per revolution		Vg	cm³	10.3	12	16	22.9	28.1	32	106.7	125	160.4	180	250
Nominal pressure		pnom	bar	400	400	400	400	400	400	400	400	400	400	350
Maximum pressure		pmax	bar	450	450	450	450	450	450	450	450	450	450	400
Maximum speed		nnom 1)	rpm	8000	8000	8000	6300	6300	6300	4000	4000	3600	3600	2700
Maximum speed		nmax 2)	rpm	8800	8800	8800	6900	6900	6900	4400	4400	4000	4000
Inlet flow 3)	at nnom	qV	l/min	82	96	128	144	177	202	427	500	577	648	675
Torque 4)	at pnom	M	Nm	66	76	102	146	179	204	679	796	1021	1146	1393
Rotary stiffness		c	kNm/rad	0.92	1.25	1.59	2.56	2.93	3.12	11.2	11.9	17.4	18.2	73.1
Moment of inertia for rotary group		JTW	kg·m²	0.0004	0.0004	0.0004	0.0012	0.0012	0.0012	0.0116	0.0116	0.022	0.022	0.061
Maximum angular acceleration		ɑ	rad/s²	5000	5000	5000	6500	6500	6500	4500	4500	3500	3500	10000
Case volume		V	l	0.17	0.17	0.17	0.2	0.2	0.2	0.8	0.8	1.1	1.1	2.5
Weight (approx.)		m	kg	5.4	5.4	5.4	9.5	9.5	9.5	32	32	45	45	73

1)	These values are valid at: - for the optimum viscosity range from vopt = 36 to 16 mm2/s - with hydraulic fluid based on mineral oils
2)	Intermittent maximum speed: overspeed for unload and overhauling processest, t < 5 s and Δp < 150 bar
3)	Restriction of input flow with counterbalance valve
4)	Torque without radial force, with radial force see table "Permissible radial and axial forces of the drive shafts

Viscosity and temperature of hydraulic fluids

	Viscosity	Shaft seal	Temperature1)	Comment
Cold start	νmax ≤ 1600 mm²/s	NBR2)	ϑSt ≥ -40 °C	t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpm, permissible temperature difference between axial piston unit and hydraulic fluid max. 25 K
Cold start	νmax ≤ 1600 mm²/s	FKM	ϑSt ≥ -25 °C
Warm-up phase	ν = 400 … 1600 mm²/s			t ≤ 15 min, p ≤ 0.7 • pnom and n ≤ 0.5 • nnom
Continuous operation	ν = 10 … 400 mm²/s3)	NBR2)	ϑ ≤ +78 °C	measured at port T
	ν = 10 … 400 mm²/s3)	FKM	ϑ ≤ +103 °C	measured at port T
	νopt = 16 … 36 mm²/s			range of optimum operating viscosity and efficiency
Short-term operation	νmin = 7 … 10 mm²/s	NBR2)	ϑ ≤ +78 °C	t ≤ 3 min, p ≤ 0.3 • pnom measured at port T
Short-term operation	νmin = 7 … 10 mm²/s	FKM	ϑ ≤ +103 °C	t ≤ 3 min, p ≤ 0.3 • pnom measured at port T

1)	If the specified temperatures cannot be maintained due to extreme operating parameters, please contact us.
2)	Special version, please contact us.
3)	Equates e.g. with the VG 46 a temperature range of +5 °C to +85 °C (see selection diagram)

Filtration of the hydraulic fluid

Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit.

A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406.

At a hydraulic fluid viscosity of less than 10 mm²/s (e.g. due to high temperatures in short-term operation) at the drain port, a cleanliness level of at least 19/17/14 according to ISO 4406 is required.

For example, the viscosity is 10 mm²/s at:

HLP 32 a temperature of 73°C HLP 46 a temperature of 85°C

Operating pressure range

Pressure at working port A or B (high-pressure side)			Definition
Nominal pressure	pnom	see table of values	The nominal pressure corresponds to the maximum design pressure.
Maximum pressure	pmax	see table of values	The maximum pressure corresponds to the maximum operating pressure within the single operating period. The sum of the single operating periods must not exceed the total operating period.
Single operating period		10 s
Total operating period		300 h
Minimum pressure	pHP min	25 bar	Minimum pressure on high-pressure side (port A or B) required to prevent damage to the axial piston unit.
Minimum pressure at inlet (pump operating mode)	pE min	see diagram	To prevent damage to the axial piston motor in pump mode (change of high-pressure side with unchanged direction of rotation, e.g. when braking),a minimum pressure must be guaranteed at the working port (inlet). The minimum pressure depends on the rotational speed and displacement of the axial piston unit.
Total pressure	pSu	700 bar	The summation pressure is the sum of the pressures at both work ports (A and B).
Rate of pressure change			Definition
with integrated pressure relief valve	RA max	9000 bar/s	Maximum permissible rate of pressure build-up and reduction during a pressure change over the entire pressure range.
without pressure relief valve	RA max	16000 bar/s
Case pressure at port T			Definition
Continuous differential pressure	ΔpT cont	2 bar	Maximum averaged differential pressure at the shaft seal (case to ambient)
Pressure peaks	pT peak	10 bar	t < 0.1 s