Bevel Gear Jacks
About Bevel Gear Jacks
Joyce Bevel Gear® Jacks, available in 7.5-ton to 100-ton static capacities, offer higher efficiency and greater speed than other mechanical screw jacks. As an added benefit, bevel gear jacks also 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. Bevel gear jacks with single lead screws (S series) provide the benefits of a self-locking screw, and bevel gear jacks with double lead screws (D series) offer even greater travel speed.
- Choose one of four standard end conditions
- Protective boots and other options are available
- Right hand and left hand screw threads are available
- Joyce/Dayton can customize to your specifications
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.
Sleeve Cap
Made from ductile iron.
Upper Thrust Bearing
Upper Seal
Sleeve (Housing)
Made from ductile iron.
Cover Plate
Made from ductile iron. Up to two required depending on the number of input shafts.
Jack Nut
Aluminum bronze material - BG jack shown (BB jack uses a ball nut with a ductile iron adapter).
Mounting Bolt Holes
Protection Tube
Lower Thrust Bearing
Pinion Gear
Input Shaft Bearings
Input Shaft Seal
Input Shaft
Up to three per jack depending on system requirements.
Carrier Housing
Made from ductile iron.
Spiral Bevel Gear
One per jack assembly.
Fill Vent
Grease Fitting
Lifting Screw
Threaded End Condition
Standard end conditions, Plain (T1), Load Pad (T2), Threaded (T3), and Male Clevis (T4).
Click the points on the Bevel Gear jacks for an indepth look at its components
- How To Select Configurations
Considerations When Selecting Motors & Mounting Configurations:
Use Quick Reference Charts determine the motor horsepower and gear reduction required to reach your target speed. For example, slow travel of just a few inches per minute will require a high ratio electric cylinder paired with a 10:1 ratio external gear reducer. While fast travel up to 546 inches per minute will require a low ratio electric cylinder paired with a direct drive motor.
NOTE: Brake motors must be specified for all ballscrews Electric Cylinders (ECB).and for any acme Screw Electric Cylinder (ECA) with an efficiency ratio greater than or equal to 30%.
Smaller Capacity Linear Actuators Are Available From Joyce
Multipurpose Actuators
1600 lb max. capacity
Both AC and DC available
Speeds to 96 in./min.
Integrated Actuators
1600 lb max. capacity
Both AC and DC available
Speeds to 96 in./min.
Customization and Special Finishes:
Joyce can customize your Electric Cylinders to meet your requirements.
Proprietary Outdoor paint process resists corrosive elements and works well in harsh environments.
Premium external finishes
Use JAX® Online
Tell us what you need or use our exclusive JAX® Online software (it’s free). We will put together complete systems for you. The software is great because it calculates motor horsepower and shaft diameters and torques. There are several common arrangements, but you can design your own.
- Product Add-Ons
Hover the product options below to view more information
- Part & Model # Guide
Our easy-to-use JAX® Online software enables you to specify the right jacks and components for your ideal lifting and linear motion systems. You can start with a complete set of requirements, or just a few simple inputs, and let JAX® Online suggest the perfect components.
Each section of the part number refers to information about jack designs and shaft codes. Click the section of the part number below to get additional information on each section.
Sample Part #:
BG150S U 2 S 12.5 STDX STDX STDX X
- BG150SModel #
Model Number
Joyce Bevel Gear® Jacks
BG150S
BG250S
BG375S
BG450S
BG1500S
BG150S
BG150S
BG150S
- UJack
ConfigurationJack Configuration
U=Upright
I=Inverted - 2End
ConditionsEnd Conditions
S=Translating
K=Keyed for Non Rotation
N=Traveling Nut - SJack
DesignsJack Designs
S=Translating
Keyed for Non Rotation
N=Traveling Nut - 12.5Bevel Ball
Actuator RiseBevel Ball Actuator Rise
Rise is travel expressed in inches and not the actual screw length.
- STDX STDX STDXLeft/ Right Side
Shaft CodeShaft Codes
Three shaft codes must be specified for each jack. Electronic and mechanical limit switches may be substituted for the shaft code per the tables on this page.
STDX- Standard
XXXX- Input shaft no required
When ordering with only one input shaft, it is recommended to order the following configuration: XXXX-STDX-XXXX
- XAdditional
OptionsAdditional Options X= Standard Jack
no additional options X= Additional Specification Required (comment as necessary)
Protective Boots B= Protective Boot
D= Dual Protective Boot Finishes
F1= Do Not Paint
F2= Epoxy Paint
F3= Outdoor Paint processe
CME Screw L= Left hand Screw Screw Stops
ST0= Extending
ST1= Retracting
ST2= Both
- BG150SModel #
- Product Specifications
Product Media
For Dynamic Capacity Please use JAX Software or Contact Joyce Dayton.
SCROLL TO THE RIGHT TO VIEW MORE>>
Model Dynamic Capacity Upright Assembly: Screw-in compression/
inverted assembly: screw-in tensionUpright Assembly: screw-in tension/ inverted assembly: Screw-in compression Screw Dia. Screw Pitch/Lead Bevel Gear Ratio Pinion Turns for 1" Travel Pinion Torque (In. Lbs.) Screw Torque Jack Efficiency Jack† Cooling Time Base Weight (Lbs.) Add for Each Inch of Travel (Lbs.) BG150-S Please
use
JAX
Software
or contact Joyce /
Dayton14,000 lbs. 14,000 lbs. 1 ½" .375 STUB ACME 2.69:1 7.18 .059W* .151W* 38.5% 38 min. 42 0.8 BG150-D* 14,000 lbs. 14,000 lbs. 1 ½" .250P / .500L STUB ACME 2C 2.69:1 5.38 .066W* .169W* 45.6% 38 min. 42 0.8 BG250-S 30,000 lbs. 30,000 lbs. 2 ½" .500P ACME 2C 2.15:1 4.31 .111W* .227W* 34.2% 82 min. 140 2.6 BG250-D* 30,000 lbs. 30,000 lbs. 2 ½" .375P / .750L ACME 2C 2.15:1 2.87 .133W* .272W* 42.6% 82 min. 140 2.6 BG375-S 66,000 lbs. 40,000 lbs. 3 ¾" 666P ACME 2C 3.52:1 5.29 .098W* .329W* 31.5% 192 min. 230 4.1 BG375-D* 66,000 lbs. 40,000 lbs. 3 ¾" .666P / 1.333L STUB ACME 3.52:1 2.64 .134W* .448W* 46.0% 192 min. 230 4.1 BG450-S 218,000 lbs. 200,000 lbs. 4 ½" .500P ACME 2C 3:1 6 .125W* .356W* 21.9% 262 min. 650 5.5 BG450-D* 218,000 lbs. 200,000 lbs. 4 ½" .500P / 1.00L ACME 2C 3:1 3 .154W* .438W* 35.5% 262 min. 650 5.5
