0.631 In. Diameter - 0.200 In. Lead

This 0.631 inch diameter ball screw has a 0.200 inch lead. Corresponding Standard capacity ball nuts are available with either right-hand or left-hand threads, and corresponding High capacity ball nuts are available with right-hand threads

Ball screw specificationsRHLH
Ball screw part no.BS 063 R 020 ABS 063 L 020 A
Nominal ball circle diameter 0.631 in.
Lead 0.200 in.
Screw diameter 0.615 in.
Root diameter 0.500 in.
Screw weight 0.83 lb./ft.
Torque to raise 1 pound* 0.035 in.-lb.
Maximum screw length 12 ft.

* Torque to raise 1 pound = 0.177 x inches lead x pounds load

Standard Capacity Ball Nut Specifications (S)

Right hand thread direction shown; left hand is available.

Ball nut specificationsRHLH
Ball nut part no. (standard capacity)BN 063 R 020 SBN 063 L 020 S
Ball nut with flange part no.BF 063 R 020 SBF 063 L 020 S
Dynamic load capacity** 825 lb.
Static load capacity 6,250 lb.
Ball nut weight 0.26 lb.
Nominal ball dia. (avg. ball qty.) 1/8 in. (67)
Flange part no.FL-0937
Wiper kit part no. WK-30

** for 1,000,000 inches

High Capacity Ball Nut Specifications (H)

Right hand thread direction shown.

Ball nut specificationsRH
Ball nut part no. high capacity)BN 063 R 020 H
Ball nut with flange part no.BF 063 R 020 H
Dynamic load capacity** 1,650 lb.
Static load capacity 9,000 lb.
Ball nut weight 0.51 lb.
Nominal ball dia. (avg. ball qty.) 1/8 in. (134)
Flange part no.FL-0937
Wiper kit part no. WK-30A

** for 1,000,000 inches


Click on Product Specifications below to view Bearing Block, Screw End Conditions, and Wiper Kit options available for this screw. 

  • Ball screws are made from alloy steel and case hardened to Rc56 (minimum).
  • A black oxide finish is applied to prevent corrosion during shipping and for a brief storage period.
  • The rust inhibiting properties of the screw lubricant offers additional corrosion resistance.
  • Ball nut housings are steel with case hardened threads. A black oxide coating provides additional protection.
  • Flanges are constructed of steel with a black oxide coating.

Sample Part Number:

Click on the part number to reveal additional information about the ball screw design 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.

 

SB Bearing Blocks

Screw NumberBearing Mount No.ABCDEFGHIJK
BS063R020A SB-12 3.000 1.875 1.000 0.375 1.125 1.125 2.250 0.672 1.344 .281 (4x) .406 Thru
BS063L020A .625 C'Bore
  .875 Deep


DB Bearing Blocks

Screw NumberBearing Mount No.ABCDEFGHIJKL
BS063R020A DB-12 3.000 1.875 1.000 0.375 1.125 1.125 2.250 0.672 1.344 .281 (4x) .406 Thru N/A
BS063L020A .625 C'Bore
  .875 Deep


FB Bearing Blocks

Screw NumberBearing Mount No.ABCDEFGHIJKL
BS063R020A FB-12 3.000 1.875 1.000 1.125 4.262 0.438 2.250 1.688 1.063 2.125 .250 Thru .406 Thru
BS063L020A .375 C'Bore .625 C'Bore
  #5 Taper Pin 1.130 Deep


SB Screw End Conditions

Screw NumberBearing Mount No.oS1A1A2A3A4A5A6o A7A8A9A10A11
BS063R020A SB-12 0.4726 0.890 0.450 0.56 0.127 0.472 1.029 1.25 .469-32 UNS W-01 N-01 6301
BS063L020A 0.4723 0.125

 

DB Screw End Conditions

Screw NumberBearing Mount No.oS1oS2A1A2A3A4A5A6A7A8A9
BS063R020A DB-12 0.4726 0.406 3.29 2.00 1.566 0.472 0.000 .469-32 UNS W-01 N-01 1/8 x 5/8
BS063L020A 0.4723 0.405

FB Screw End Conditions

Screw NumberBearing Mount No.oS1oS2A1A2A3A4A5A6A7A8A9A10A11
BS063R020A FB-12 0.4726 0.406 4.30 3.00 2.35 1.850 0.472 0.923 0.038 .469-32 UNS W-01 N-01 1/8 x 5/8
BS063L020A 0.4723 0.405

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