Black Bruin B250 Product Manual
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Black Bruin B250 Product Manual

Wheel motors b200 series
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Summary of Contents for Black Bruin B250

  • Page 1 Product Manual B200 series...

  • Page 2: Table Of Contents

    Contents Contents General Instructions................. 4 About the manual............................4 Intended use..............................4 Warranty................................4 Product identification............................. 4 Revision comments............................4 Declaration of incorporation......................... 5 Safety Instructions................6 Warning symbols..............................6 Motor Description................7 Working principle.............................. 7 Product identification code...........................8 3.2.1 Motor model code......................... 8 3.2.2 Processing ID..........................
  • Page 3 Contents Motor Sizing..................34 Load carrying capacity..........................34 5.1.1 Wheel offset..........................34 5.1.2 Allowed wheel load........................35 5.1.3 Service life............................ 35 Performance..............................36 5.2.1 Rotating speed and flow rate....................36 5.2.2 Torque............................37 5.2.3 Power.............................38 Installation Instructions..............39 Mounting the motor............................39 Flushing the hydraulic system........................39 Air bleeding procedure..........................39 Commissioning procedure..........................40 Operating Instructions..............

  • Page 4: General Instructions

    3D-models are available from the manufacturer by request. Intended use Black Bruin B200 series hydraulic motors are designed to be used as hub motors to produce traction on tractor-driven trailers and working equipment. Warranty Check the package and the product for transport damage when receiving goods. The package is not meant for long term storage;...

  • Page 5: Declaration Of Incorporation

    General Instructions Declaration of incorporation Product Manual...

  • Page 6: Safety Instructions

    Safety Instructions Safety Instructions The following instructions apply to all procedures associated with the motor. Read these instructions carefully and follow them closely. • Use necessary personal protective equipment when working with the motor. • Support the motor properly. Make sure the motor cannot fall over or turn around by accident.

  • Page 7: Motor Description

    Motor Description Motor Description Working principle B200 series motors are rotary-housing. This means the motor shaft and the cylinder block remain in place while the motor is running. Shaft Distribution valve Cylinder block Piston Cam roll Cam ring Bearings Housing 10.

  • Page 8: Product Identification Code

    Motor Description Product identification code Black Bruin product identification code consists of motor model code and processing B260-0250-2NOL / GZ 1 1 0 0 0 0 Motor model code Processing ID 3.2.1 Motor model code B200 SERIES MODEL CODE AAAA - BBBB - CCCC / D...

  • Page 9: Processing Id

    Motor Description D: Accessory AAAA-BBBB-CCCC/D B240 B250 B260 B270 MRJ40-0 : Brake size 320x75 ● MRJ50-0 : Brake size 400x80 ● MRJ60-R : Brake size 420x220 - Drum brake* ● Right side MRJ60-L : Brake size 420x220 - ● Left side = Certified brakes, manufactured by Monroc.

  • Page 10: Technical Data

    Pressure openings and threaded holes are capped with plastic fittings. Hydraulic fluid is drained out. Delivery on wooden pellet or in plywood box. The manufacturer keeps test records of every manufactured motor. Technical data TECHNICAL DATA B240 B250 Displacement [ccm] at full displacement 1000 1250...
  • Page 11 Motor Description TECHNICAL DATA B240 B250 average intermittent Pilot pressure for internal valve [bar] valve released valve engaged 15-30 15-30 Max. flow rate [l/min] at full displacement at half displacement Max. load capacity [t] no brake Weight [kg] with drum brake...

  • Page 12: Motor Interfaces

    If pilot pressure over 30 bar is used, the pilot line should be throttled. The load capacity must be estimated for every application. Motor interfaces 3.4.1 Main dimensions Figure 5. Main dimensions of the motor. MAIN DIMENSIONS B240 B250 B260 B270 Motor [mm] [mm]...

  • Page 13: Shaft Interface

    Motor Description 3.4.2 Shaft interface Figure 6. Dimensions of the shaft interface. INTERFACE DIMENSIONS B240 B250 B260 B270 Shaft interface [mm] pattern 6x60° 8x45° 12x30° 16x22,5° size M16x2,0 M16x2,0 M20x1,5 M20x1,5 strength class 12,9 12,9 12,9 12,9 tightening tor- [Nm] min.

  • Page 14: Hub Interface

    The motor is attached to the body of the vehicle or device from the shaft flange. The hydraulic connections of the motor are located on the plane surface of the shaft flange. 3.4.3 Hub interface Figure 7. Dimensions of the hub interface. INTERFACE DIMENSIONS B240 B250 B260 B270 Hub interface [mm] pattern 6x60°...

  • Page 15: Housing Interface

    Motor Description Declared values are for reference only. Always use application specific tightening torques when given. The wheel rim or the rotatable device is attached to the motor hub. Note: The attachment screws are not included in the motor delivery. Ensure correct dimensioning and availability of the hub screws.
  • Page 16 Motor Description INTERFACE DIMENSIONS B240 B250 B260 B270 Housing interface [mm] pattern 12x30° 12x30° 18x20° 18x20° size M10x1,5 M12x1,75 M12x1,75 M16x2,0 strength class 10,9 10,9 10,9 10,9 tightening tor- [Nm] min. [mm] min. [mm] 1x45° 1x45° 1x45° 1x45° Strength class as in ISO898-1. If using lower strength class, check interface load capacity and tightening torque.

  • Page 17: Drum Brake Interface

    Motor Description 3.4.5 Drum brake interface Figure 12. Interface dimensions of the motor with the drum brake (B240, B250). Figure 13. Interface dimensions of the motor with the drum brake (B260). INTERFACE DIMENSIONS B240 B250 B260 Drum brake interface [mm]...

  • Page 18: Rotating Direction

    Motor Description INTERFACE DIMENSIONS B240 B250 B260 tightening tor- [Nm] [mm] max. 121 max. 156 min. 235,5 [mm] min. [mm] 1x45° 1x45° 1x45° max. [mm] [mm] Strength class as in ISO898-1. If using lower strength class, check interface load capacity and tightening torque.

  • Page 19: Mechanical Freewheeling

    Motor Description The preferred operating direction applies to motors with 2-speed valve (see 2-speed valve : 2N0R / 2N0L on page 21). The preferred operating direction is the rotating direction of the motor when the flow direction is from port A to B. •...

  • Page 20: 1-Speed : 1N00

    Motor Description be divided between fewer motors, when some of the motors are disengaged. Attention: Any pressure in the working lines (A and B) during the freewheeling pushes the pistons out of the freewheeling position. This causes clattering noise when the pistons connect to the cam ring. Constant clattering of the pistons may cause premature wear or failure of the motor.

  • Page 21: 2-Speed Valve : 2N0R / 2N0L

    Motor Description Figure 16. 1-speed motor. Figure 17. Hydraulic circuit, 1-speed motor. 2-speed valve : 2N0R / 2N0L AAAA BBBB 2N0R AAAA BBBB 2N0L The 2-speed valve enables change of displacement during operation. The benefit of this function is a more extensive speed range with the same hydraulic system capacity.

  • Page 22: Freewheeling Valve : Fw10 / Fw20

    Motor Description USING THE 2-SPEED VALVE Using the 2-speed valve works in the same manner as gear shifting. • SHIFTING TO HALF DISPLACEMENT The motor is switched to half displacement by applying the pilot pressure (see Pilot pressure on page 32) to the pilot line (Y). When the motor operates at half displacement, it rotates twice as fast and generates half of the torque when compared to a motor on full displacement with the same flow rate and pressure.
  • Page 23 Motor Description Figure 20. A motor with freewheeling Figure 21. Hydraulic circuit, a motor with valve. internal freewheeling valve. FREEWHEELING VALVE TYPE Please note that the images below also show the crossover position of the valve. • FW10 = VALVE TYPE 1 The working lines (A and B) of the motor are open (in short circuit), when the motor is disengaged.

  • Page 24: Seal Protector : Nz/Gz

    Relief valve* Nipple (2x180º) Dirt seal * = not included with B240 Figure 22. The seal protector, the dirt seal, the relief valve and the nipples. The seal protector prevents dirt and moisture from entering to the motor shaft seal.
  • Page 25 Motor Description • Add lubricant from both nipples during operation. It is recommended to add lubricant when the motor is warm. • Lubricate the seal protector as part of the vehicle lubrication routine. • Observe lubrication adequacy during use and increase or decrease lubrication as needed.

  • Page 26: System Design

    System Design System Design Motor hydraulic circuit 4.1.1 Simple connection Figure 24. A simple motor hydraulic circuit in an open loop hydraulic system. In an open loop hydraulic system the hydraulic circuit of the motor is usually implemented roughly as in the figure above. •...
  • Page 27 System Design PARALLEL CIRCUIT Figure 25. Two motors in parallel circuit. Two motors in parallel circuit generate double torque and run half slower than one motor with the same flow rate and pressure. Note: The flow distribution of the motors must be ensured, if the operating conditions are very slippery or if some of the powered wheels carry much smaller load.

  • Page 28: Counter Pressure Operation

    System Design 4.1.3 Counter pressure operation Counter pressure operation is needed mainly in series connection (see Motors in parallel or series circuit on page 26). Counter pressure operation means using the motor with high back pressure in the return line. The counter pressure operation affects the torque output of the motor due to decreased pressure difference over the working lines.

  • Page 29: Hydraulic Connections

    System Design Hydraulic connections Figure 29. The hydraulic connections. Figure 28. The interface of the motor hydraulics. All hydraulic connections of the motor are on the shaft mating surface. • WORKING LINE PORTS (A and B) The working lines, aka the feed and return lines of the motor are the high pressure lines meant for running the motor.
  • Page 30 System Design 2/2 VALVE • When the motor is disengaged using the 2/2 valve (6a), the directional control valve (1) should have “Y” spool mid position. Use of the 2/2 valve may be optimized by switching the freewheeling valve (6a) just before (max.

  • Page 31: Hydraulic Fluid

    4.4.1 Hydraulic fluid type Black Bruin hydraulic motors are designed to work with hydraulic fluids based on mineral oil. Consider the following requirements when choosing hydraulic fluid: • Hydraulic oils in accordance with ISO 6743-4 are recommended to be used.

  • Page 32: Pilot Pressure

    System Design Attention: Running the motor with higher than allowed case pressure shortens the service life of the motor. Note: The lifetime of the sealing may be improved with an accumulator, which cuts the pressure peaks that are higher than the pre-charge pressure of the accumulator.
  • Page 33 System Design In open loop hydraulic system the minimum pressure may be done with back pressure. The back pressure is usually generated by a suitable check valve with cracking pressure. • CHARGE PRESSURE In closed loop hydraulic system the charge pressure is usually used as the minimum pressure.

  • Page 34: Motor Sizing

    Motor Sizing Motor Sizing Load carrying capacity 5.1.1 Wheel offset The load carrying capacity of the motor is defined by the offset value of the wheel rim and the application specific safety factor. The offset value is the distance from the wheel center line to the wheel interface. The load charts of the motors are given as a function of offset value.

  • Page 35: Allowed Wheel Load

    Motor Sizing 5.1.2 Allowed wheel load The allowed wheel load is based on the fatigue strength of the shaft (curved part) and the load carrying capacity of the screw joints (flat part). The load curve is based on peak loads that are about 2x the average load. MOTOR LOAD CURVE Load [kN] Wheel offset,...

  • Page 36: Performance

    Motor Sizing BEARINGS LOAD CURVE Load [kN] Wheel offset, b[mm] Figure 38. Bearing load carrying capacity F10m. The service life may be estimated with the following equation: = nominal service life [h] RPM = rotating speed [rpm] G = average wheel load [kN] = bearing load carrying capacity [kN] Performance 5.2.1...

  • Page 37: Torque

    Motor Sizing WORKING SPEED - WHEEL RADIUS speed [rpm] speed [km/h] speed [m/s] Figure 39. Vehicle speed and motor rotat- ing speed with different wheel radius. FREEWHEELING SPEED - WHEEL RADIUS speed [rpm] speed [km/h] speed [m/s] Figure 40. Vehicle freewheeling speed and motor rotating speed with different wheel radius.

  • Page 38: Power

    Motor Sizing MAXIMUM TORQUE T = torque [Nm] V = displacement [ccm] STARTUP TORQUE Δp = pressure difference [bar] 5.2.3 Power The operating power of the motor should be determined for all operating conditions. The operating power may be calculated with the following equation: P = power [kW] Q = flow rate in working lines [l/min] RPM = rotating speed [rpm]...

  • Page 39: Installation Instructions

    Installation Instructions Installation Instructions Mounting the motor The installation dimensions and tightening torques are given in the product datasheet. Check the following things for mounting the motor: • The counter surfaces must be clean and even. • Make sure that the strength class (grade) of the fastening screws is sufficient. •...

  • Page 40: Commissioning Procedure

    Installation Instructions • Feed hydraulic fluid into the motor with low pressure throughout the procedure. • Unscrew the air bleeding screw by half a turn and let air escape from the housing. • Close the screw when only hydraulic fluid is pouring through it. •...

  • Page 41: Operating Instructions

    Operating Instructions Operating Instructions Break-in period The motor achieves its final properties during the first hours of use. Therefore all new and reconditioned motors should go through an initial break-in period. Things to be considered during break-in period: • The break-in period should last for at least first eight hours (8 h) of use. •...
  • Page 42 Operating Instructions • Clean the outside of the motor thoroughly, but do not use any solvents. • Protect the cleaned motor from corrosion. • If possible, drain all the hydraulic fluid from the motor. Note: Dispose of hydraulic fluid should be done appropriately. Product Manual...

  • Page 43: Special Instructions

    Special Instructions Special Instructions Storing the motor During short term storage of the motor, the following should be taken into consideration: • Cover any pressure openings and open threaded holes with suitable caps. • Protect the unpainted surfaces from dirt and moisture. •...
  • Page 44 +358 20 755 0755 P.O. Box 633, FI-40101 JYVÄSKYLÄ, FINLAND www.blackbruin.com info@blackbruin.com All the information contained in this publication is based on the latest information available at the time of publication. Black Bruin Inc. reserves the right to make changes without prior notice.

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