Bevel Ball Jacks

Joyce Bevel Ball Actuators (BB), available in 7.5-ton to 100-ton static capacities, are designed for near-continuous duty operation. These are Joyce’s fastest jacks, able to attain travel speeds of 48.6 feet per minute. Available in Translating and KFTN designs, bevel ball actuators act as miter boxes, making them an ideal choice for multi-jack systems. As many as three output shafts may be specified for mounting motors, limit switches, readout devices and other accessories.

  • Higher speeds and less heat generation than other mechanical actuators
  • Require a brake or other external locking device to hold position
  • More precise positioning and repeatability than hydraulic cylinders
  • Fully predictable J-10 ball nut life expectancy
  • Right hand screws standard (left hand screw available)
  • Threaded end conditions standard (load pad, clevis, and plain end condition available)
  • Protective boots and other options are available
  • Custom finishes available

Joyce Bevel Ball Actuators (BB) come in four capacities:

Parts list and exploded view are included in the O&M Manual. Serial numbers are attched to the product housing.

Motor Controls:

Joyce offers motor controls ranging from simple Motor Starters to complex positioning systems and Custom controls. Every system that is powered by an electric motor requires a control system. At Joyce, we know that choosing the best option can sometimes be a challenge. That’s why our Engineers are available to help you through the process.

Ball Screw Options

  • Right hand thread standard
  • Left hand thread available on many models
  • Special pitch/lead available
  • Special finishes available
  • Special machining options

Encoders

  • Standard 200 or 1024 PPR
  • Quadrature wave form
  • Stainless steel encoder
  • Absolute encoder
  • Encoders

Finishes

  • Enamel finish (standard)
  • Epoxy finish
  • STEEL IT® epoxy
  • Outdoor paint process
  • Custom finishes available
  • Anodized (250-lb to 1-ton)
  • Nickel, Xylan®, Armoloy®
  •  Finishes

  

   

Limit Switches

  • Rotary cam (2-4 switches)
  • SPDT standard
  • DPDT available
  • Explosion proof available
  • Limit Switches

Lubrication

  • Standard grease temperature range (40°F to 220°F)
  • Low temperature option
  • High temperature option
  • Food grade option

Oversized Ball Bearings

  • Available for ball screw jacks
  • Limits screw backlash to 0.003"

Protective Boots

  • Protection from dirt and dust
  • Guard against moisture
  • Guard against corrosive contaminants
  • Neoprene coated nylon (std)
  • Special materials available
  • Boot Material Chart
  • Protective Boots

Screw Stops

  • Standard on ComDRIVEs
  • Adjustable
  • Bolt- on
ModelDynamic CapacityUpright Assembly: Screw-in tensionUpright Assembly: Screw-in compressionScrew Dia./LeadBevel Gear RatioPinion Turns for 1" TravelPinion Torque (Raising)Pinion Torque (Holding)Screw TorqueActuator EfficiencyBase Weight (Lbs.)Add for Each Inch of Travel (Lbs.)
BB150 Please use JAX® V2 software or contact Joyce/Dayton 15,000 lbs. 15,000 lbs. 1.50/.25 2.69:1 10.77 .022W* .018W* .044W* 72.2% 52 0.7
BB225 30,000 lbs. 30,000 lbs. 2.25/.50 2.15:1 4.31 .054W* .044W* 089W* 200 2.6
BB300 42,500 lbs. 70,000 lbs. 3.75/.66 3.52:1 5.34 .044W* .035W* .117W* 360 3.2
BB400 200,000 lbs. 200,000 lbs. 4.00/1.00 3:1 3.00 .078W* .063W* .117W* 740 4.8
 Inverted Assembly: Screw-in tensionInverted Assembly: Screw-in compression 
BB150 Please use JAX® V2 software or contact Joyce/Dayton 15,000 lbs. 15,000 lbs. 1.50/.25 2.69:1 10.77 .022W* .018W* .044W* 72.2% 52 0.7
BB225 30,000 lbs. 30,000 lbs. 2.25/.50 2.15:1 4.31 .054W* .044W* 089W* 200 2.6
BB300 70,000 lbs. 42,500 lbs. 3.75/.66 3.52:1 5.34 .044W* .035W* .117W* 360 3.2
BB400 200,000 lbs. 200,000 lbs. 4.50/1.00 3:1 3.00 .078W* .063W* .117W* 740 4.8

 

Important Note: Bevel Ball Actuators are not self-locking. Brake motors or external locking systems are required.
*W: Load in Pounds.
Pinion Torque (raising): The torque required to continuously raise a given load.
Pinion Torque (holding): The torque required to hold a given static load in position.
Screw Torque: The torque required to resist screw rotation (translating design) and traveling nut rotation (KFTN design).
Lead: The distance traveled axially in one rotation of the lifting screw.
Pitch: The distance from a point on the screw thread to a corresponding point on the next thread, measured axially.