Ball Screw Jacks 1 Ton

WBL51, WBL201

Joyce 1-ton ball screw worm gear jacks lift and precisely position loads. Upright or inverted, these jacks operate at full capacity in tension or in compression and are available in Translating and KFTN designs. Standard (WBL51, WBL201) jacks are highly efficient and require a brake or other external locking device to hold position.

  • 3/4" diameter lifting screw
  • Available in 5:1 and 20:1 gear set ratios
  • Standard lead, 0.2"
  • Aluminum housing and protection tube
  • Alloy steel ball screw
  • Input shaft (worm), 4140 CDS

Sample Part Number:

Click on the part number to reveal additional informaton about jack designs and shaft codes.

Model Number

1-Ton Standard 2-Ton Standard 2-Ton Reverse Base Standard 5-Ton Standard 10-Ton Standard 10-Ton Heavy Duty 20-Ton Standard 30-Ton Standard 50-Ton Standard
WBL51
WBL201
WB62
WB122
WB242
RWB62
RWB122
RWB242
WB65
WB125
WB245
WBL810
WBL2410
WB810
WB2410
WB820
WB2420
WB1130
WB3230
WB1150
WB3250
1-Ton Heavy Duty 2-Ton High Lead 2-Ton Reverse Base High Lead 5-Ton High Lead 10-Ton Standard High Lead 10-Ton Heavy Duty High Lead 50-Ton Reverse Base
WB51
WB201
HWB62
HWB122
HWB242
RHWB62
RHWB122
RHWB242
HWB65
HWB125
HWB245
HWBL810
HWBL2410
HWB810
HWB2410
RWB1150
RWB3250

Important Note: *Not self-locking, may lower under load. Brake motors or external locking systems are required.
H: indicates High lead (2-ton, 5-ton and 10-ton only).
R: Reverse Base Jack (2-ton and 50-ton only).

Jack Configuration

U=Upright

I=Inverted

End Conditions

1=T1
(plain end)

2=T2
(load pad)

3=T3
(threaded end)

4=T4
(male clevis)

Jack Designs

S=Translating

K=Keyed for Non Rotation**

N=Traveling Nut

D=Double Clevis

R=KFTN Trunnion*
T=Trunnion*

*Standard trunnion mounts available on 2-ton through 20-ton jacks.
**Keyed for non-rotation is not a standard option. Contact Joyce/Dayton with your requirements.

Ball Screw Jack Rise

Rise is travel expressed in inches and not the actual screw length.

Left Side Shaft Code

Right Side Shaft Code

XXXX=Remove
STDX=Standard

XXXX=Remove
STDX=Standard

 


Optional Shaft Codes

Screw Stops and Boots

Screw stops are optional on ball screw jacks. When specified, the closed height of the jack and/or the protection tube length may be increased. When boots are added to ball screw jacks, the closed height of the jack may be increased.

Geared Potentiometers

POTA=0-10V (IP65)
POTB=4-20MA (IP65)
POTC=0-10V w/2 switches*
POTD=4-20MA w/2 switches*
*Optional IP65 rating available

Encoders and Electronic Limit Switches

ENCX=Encoder
ELS2=2 Position Electronic Switch
ELS4=4 Position Electronic Switch
ELS6=6 Position Electronic Switch

Motor for Systems and Direct Drive

  • All standard motors are 3-phase, 208-230/460 VAC or 230/460 VAC. Other motor options are available. Specify the appropriate motor size from the chart on the right.
  • Refer to the "Additional Options" chart on the preceding page as needed.
  • Brake motors (M2) are recommended for jacks that are not self-locking, and jacks with double lead screws.
  • If the motor frequency will be varied to provide a "soft" start an inverter duty motor may be required.

Motors

Size Code
1/4 HP K
1/3 HP A
1/2 HP B
3/4 HP C
1 HP D
1-1/2 HP E
2 HP F
3 HP L
5 HP G
7-1/2 HP H
10 HP I
15 HP J

Motor Mounts

Ordering Example:
MMA A (Motor code from chart above)

MMA=56C
MMB=140TC
MMC=180TC
MMD=210TC

Standard motor adapters are aluminum

Mechanical Limit Switches

Ordering Example:
LA (Models) 1(Number of DPDT Switches) 3(Available Positions)

Model Code   Available Positions
LS7-402 LI

Number of DPDT Switches

NOTE: Will always be 0 for LS7 models

  1 2* 3 4 5 6* 7 8
LS8-402 LA Left Side Shaft Options
LS8-504 LB
LS9-502 LC
LS9-503 LD Right Side Shaft Options
LS9-504 LE
LS9-505 LF
LS9-506 LG
  • 2, 3, 5, 10, 15, and 20 ton jacks are available with positions #1, #3, and #5
  • 25, 30, 35, 50, 75, 100, and 150 ton jacks are available with positions #1, #4, #7, and #8

These positions are not standard. Contact Joyce/Dayton with your requirements.

LS9-507 LH

Additional Options

  • X=Standard Jack, no additional options
  • S=Additional Specification Required (comment as necessary)

Anti-Backlash

  • A=Split Nut
  • A90=A90 Design
  • A95=A95 Design

Protective Boots

  • B=Protective Boot
  • D=Dual Protective Boot

Finishes

  • F1=Do Not Paint
  • F2=Epoxy Paint
  • F3=Outdoor Paint Process

Motor Options

  • M1=Less Motor
  • M2=Brake Motor
  • M3=Single Phase Motor (120VAC)
  • M4=50Hz Motor

Grease/Seals

  • H1=High Temperature Operation
  • H2=Food Grade

Screw Stops

  • ST0=Extending
  • ST1=Retracting
  • ST2=Both
  • Specify as many options as needed
ModelCapacityScrew Diameter (inches)Thread Pitch/LeadWorm Gear RatioWorm Shaft Turns for 1" TravelTare Torque (Inches Lbs.)Starting Torque (Inches Lbs.)Operating Torque (Inches Lbs.)Efficiency Rating % ApproxScrew Torque (Inches Lbs.)Worm Holding (Inch Lbs.)Ball Nut Life at Rated Load (Inch Screw Travel x 1000)Basic Jack Weight (Lbs.)Jack Weight 
per Inch Travel(Lbs.)
WBL51 1 ton 3/4 0.2 5:1 25 3 .014W* .012W* @
500 RPM
51.7 .035W* .006W* 108 8 0.25
WBL201 1 ton 3/4 0.2 20:1 100 3 .005W* .004W* @
500 RPM
38.5 .035W* .002W* 108 8 0.25

Note 1: Due to the housing design, it is not possible to mount a motor, encoder, potentiometer, or counter directly to the jack housing.

Note 2: Ball Screw Jacks are not self-locking. Brake motors or external locking systems are required.

*W: Load in pounds.
Tare Torque: Initial torque to overcome seal and normal assembly drag. (This value must be added to starting torque or operating torque values.)
Starting Torque: Torque value required to start moving a given load (dissipates to operating torque values once the load begins moving).
Operating Torque: Torque required to continuously raise a given load at the input RPM listed. NOTE: If your actual input RPM is 20% higher or lower than the listed RPM, please refer to our JAX program to determine actual torque values at your RPM.
Screw Torque: Torque required to resist screw rotation (Translating Design Jacks) and traveling nut rotation (Keyed for Traveling Nut Design Jacks).
Worm Holding Torque: Torque required to prevent input shaft (worm) from backdriving.
Lead: The distance traveled axially in one rotation of the lifting screw.
Pitch: The distance from a point on a screw thread to a corresponding point on the next thread, measured axially.

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