Ball Screws and Nuts

Joyce/Dayton offers Ball screw and ball nut assemblies in a variety of screw leads and in diameters ranging from .631" to 4.000". Ball nuts and steel flanges are available for each screw size and lead. Choose the ball nut capacity that meets your application requirements. Several ball screws are available in either right-hand or left-hand threads. Complete assemblies include bearing blocks and finished machining on screw ends. For additional support, fill out the Screw and Nut Selection Guide, or Contact Joyce/Dayton with your specific requirements.

DIAMETERTHREADLEADSCREW DESCRIPTIONBALL NUT OPTIONS (S) (H) (U)BALL NUT FLANGE ASSEMNB;Y
0.631 R 0.200 BS063R020A BN063R020S BF063R020S
     BN063R020H BF063R020H
0.631 L 0.200 BS063L020A BN063L020S BF063L020S
0.750 R 0.200 BS075R020A BN075R020S BF075R020S
     BN075R020H BF075R020H
0.750 R 0.500 BS075R050A BN075R050S BF075R050S
1.000 R 0.250 BS100R025A BN100R025S BF100R025S
     BN100R025H BF100R025H
     BN100R025U BF100R025U
1.000 L 0.250 BS100L025A BN100L025S BF100L025S
1.000 R 0.500 BS100R050A BN100R050S BF100R050S
1.000 R 1.000 BS100R100A BN100R100S BF100R100S
1.500 R 0.500 BS150R050A BN150R050S BF150R050S
     BN150R050H BF150R050H
1.500 R 1.000 BS150R100A BN150R100S BF150R100S
1.500 R 1.875 BS150R188A BN150R188S BF150R188S
2.250 R 0.500 BS225R050A BN225R050S BF225R050S
     BN225R050H BF225R050H
2.500 R 0.500 BS250R050A BN250R050S BF250R050S
3.000 R 0.660 BS300R066A BN300R066S BF300R066S
4.000 R 1.000 BS400R100A BN400R100S BF400R100S

 

*Note: Bearing blocks used in screw & nut assemblies may not be rated for the same static load as the screws or nuts with which they are used. Contact Joyce/Dayton to verify that bearing blocks are adequately sized for the required loads


Sample Part Number:

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

Thread Form

B: Ball Screw

Component

A: Assembly
S: Screw - without ball nut or bearing mounts

Screw Diameter - Thread direction - TPI (English)

Dia/TPI Code
5/8 - .200* 063 R 020
3/4 - .200 075 R 020
3/4 - .500 075 R 050
1 - .250* 100 R 025
1 - .500 100 R 050
1 - 1.000 100 R 100
1 1/2 - .500 150 R 050
1 1/2 - 1.00 150 R 100
1 1/2 - 1.875 150 R 188
2 1/4 - .500 225 R 050
2 1/2 - .500 250 R 050
3 - .660 300 R 066
4 - 1.000 400 R 100

R – Right-hand – all thread diameters/leads are available with right hand threads
L – Left-hand *- Substitute an ”L” in the part number for left hand leads

 

Screw Material

A: Alloy Steel

First End of Screw

(Flange or threaded end of nut always faces second end)

Bearing Mount Options Machining Options (choose one that corresponds to the bearing block)
SB - Simple Single* 1N – Threaded shaft only
DB - Simple Double 2K –  Thd Shaft w Kwy, 2L – Thd Shaft no Kwy, 2N – Threaded shaft only
FB - Fixed Double 3K –  Thd Shaft w Kwy, 3L – Thd Shaft no Kwy, 3N – Threaded shaft only
XX - No Bearing 4K –  Shaft w Keyway, 4L – Shaft no Keyway, 4N – Support only, XX – No Machining

(When selecting ”XX – No Bearing”, choose from mounting options 1K through 4N  or XX, above)
* All Simple Single bearing mounts are designed for radial loads only

Second End of Screw

(Flange or threaded end of nut always faces away from second end)

Bearing Mount Options Machining Options (choose one that corresponds to the bearing block)
SB - Simple Single* 1N – Threaded shaft only
DB - Simple Double 2K –  Thd Shaft w Kwy, 2L – Thd Shaft no Kwy, 2N – Threaded shaft only
FB - Fixed Double 3K –  Thd Shaft w Kwy, 3L – Thd Shaft no Kwy, 3N – Threaded shaft only
XX - No Bearing 4K –  Shaft w Keyway, 4L – Shaft no Keyway, 4N – Support only, XX – No Machining

(When selecting ”XX – No Bearing”, choose from mounting options 1K through 4N  or XX, above)
* All Simple Single bearing mounts are designed for radial loads only

Ball Nut Properties

S - Standard Capacity
H - High Capacity
U - Ultra Capacity
X - No ball nut

Other Options

F - With Flange
B - With Flange and Wipers
W - Wipers
X - No Options

Screw Length 000.00"

Enter value in inches with decimal if needed
Note that available screw length varies among screw sizes.

 

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