KEY       Part # Key: R-XX-1=Screw | R-XX-2=Nut
Nominal Diameter Lead in Inches Part Number Diagram Operating Load for 1x106 Inches Travel (lbs) Maximum Static Load (lbs) Standard Length Screw (ft)† Ball Bearing Nominal Diameter (avg qty/nut) CAD Links Catalog Page
.375 .125 (RH) R-10-1
R-10-2		 150 1,300 4 1/16
(62)		 CAD PDF
.125 (RH)* R-15-1
R-15-2		 25 230 4 1/16 S.S.
(62)		 CAD PDF
.125 (RH) R-11-1
R-11-2		 300 2,600 4 1/16
(124)		 CAD PDF
.125 (RH)* R-16-1
R-16-2		 50 460 4 1/16 S.S.
(124)		 CAD PDF
.500 .500 (RH)

R-20-1
R-20-2

 850 4,150 4 1/8
(70)		 CAD PDF
.500 (RH)* R-21-1
R-21-2		 140 750 4 1/8 S.S.
(70)		 CAD PDF
.500 (RH)* R-22-1
R-22-2		 140 750 4 1/8 S.S.
(70)		 CAD PDF
.500 (RH) R-23-1
R-23-2		 850 4,150 4 1/8
(70)		 CAD PDF
.631 .200 (RH) R-30-1
R-30-2		 825 6,250 6 1/8
(67)		 CAD PDF
.200 (LH) R-31-1
R-31-2		 825 6,250 6 1/8
(67)		 CAD PDF
.200 (RH)* R-32-1
R-32-2		 170 1,250 6 1/8 S.S.
(67)		 CAD PDF
.631 .200 (RH) R-30A-1
R-30A-2		 1,650 9,000 6 1/8
(134)		 CAD PDF
.750 .200 (RH) R-34-1
R-34-2		 1,900 17,800 6 1/8
(168)		 CAD PDF
.200 (RH) R-35-1
R-35-2		 950 8,900 6 1/8
(84)		 CAD PDF
.200 (RH)* R-36-1
R-36-2		 160 1,350 6 1/8 S.S.
(84)		 CAD PDF
.500 (RH) R-37-1
R-37-2		 3,400 21,000 6 5/32
(150)

CAD

 PDF
.500 (RH)* R-38-1
R-38-2		 600 3,900 6 5/32 S.S.
(150)		 CAD PDF
1.000 .250 (RH) R-40-1
R-40-2		 1,625 13,000 12

5/32
(85)

 CAD PDF
.250 (LH) R-41-1
R-41-2		 1,625 13,000 12 5/32
(85)		 CAD PDF
1.000 .250 (RH) R-40A-1
R-40A-2		 3,250 26,000 12 5/32
(170)		 CAD PDF
.250 (RH) R-40B-1
R-40B-2		 4,500 39,000 12 5/32
(255)		 CAD PDF
.250 (RH) R-40RF-1
R-40RF-2		 3,250 26,000 12 5/32
(170)		 CAD PDF
.250 (LH) R-41LF-1
R-41LF-2		 3,250 26,000 12 5/32
(170)		 CAD PDF
.250 (RH) R-42-1
R-42-2		 3,450 30,000 12 5/32
(178)		 CAD PDF
.500 (RH) R-43-1
R-43-2		 4,250 30,000 12 5/32
(186)		 CAD PDF
1.000 1.000 (RH) R-44-1
R-44-2		 2,300 11,500 12 5/32
(98)		 CAD PDF
1.150 .200 (RH) R-45-1
R-45-2		 2,450 24,500 12 1/8 (244) CAD PDF
.200 (RH)* R-46-1
R-46-2		 490 4,600 12 1/8 S.S
(244)		 CAD PDF
.200 (LH) R-47-1
R-47-2		 2,450 24,500 12 1/8
(244)		 CAD PDF
1.063 .625 (RH) R-48-1
R-48-2		 3,300 21,000 12 5/32
(154)		 CAD PDF
1.500 .500 (RH) R-50-1
R-50-2**		 9,050 55,000 12 5/16
(102)		 CAD PDF
.500 (RH) R-50A-1
R-50A-2		 12,900 94,000 12 5/16
(140)		 CAD PDF
.500 (LH) R-51A-1
R-51A-2		 12,900 94,000 12 5/16
(140)		 CAD PDF
1.500 .250 (LH) R-53-1
R-53-2		 4,250 44,800 12 5/32
(260)		 CAD
 PDF
.250 (RH) R-54-1
R-54-2		 4,250 44,800 12 5/32
(260)		 CAD PDF
.250 (RH) R-54A-1
R-54A-2		 6,400 67,200 12 5/32
(390)		 CAD PDF
1.000 (RH) R-55-1
R-55-2		 8,000 34,500 12 11/32
(64)		 CAD PDF
1.000 (LH) R-56-1
R-56-2		 8,000 34,500 12 11/32
(64)		 CAD PDF
.4737 (RH) R-57-1
R-57-2		 10,050 57,700 12 11/32
(86)		 CAD PDF
1.875 (RH) R-58-1
R-58-2		 7,350 30,000 12 9/32
(90)		 CAD PDF
2.000 1.000 (RH) R-61-1
R-61-2		 22,500 130,000 12 3/8
(160)		 CAD PDF
.500 (RH) R-62-1
R-62-2		 18,000 130,000 12 3/8
(152)		 CAD PDF
2.250 .500 (RH) R-60-1
R-60-2***		 19,800 142,500 12 3/8
(154)		 CAD PDF
.500 (RH) R-60A-1
R-60A-2		 29,700 213,000 12 3/8
(237)		 CAD PDF
.500 (LH) R-63-1
R-63-2***		 19,800 142,500 12 3/8
(154)		 CAD PDF
2.500 .500 (RH) R-70-1
R-70-2***		 22,000 155,500 12 3/8
(186)		 CAD PDF
2.500 1.000 (RH) R-71-1
R-71-2		 26,500 155,000 12 3/8
(194)		 CAD PDF
.250 (RH) R-74-1
R-74-2		 6,300 78,000 12 5/32
(477)		 CAD PDF
1.500 (RH) R-75-1
R-75-2		 32,500 175,000 12 1/2
(112)		 CAD PDF
3.000 .660 (RH) R-80-1
R-80-2***		 42,000 260,000 12 1/2
(177)		 CAD PDF
4.000 1.000 (RH) R-90-1
R-90-2		 85,000 476,950 24 5/8
(186)		 CAD PDF
1.000 (LH) R-91-1
R-91-2		 85,000 476,950 24 5/8
(186)		 CAD PDF
*Stainless steel models
** Ball nut available without mounting thread, with 3/8" key slot full length of ball nut
*** Ball nut available without mounting thread, with 1/2" key slot full length of ball nut		 Economy-priced
models highlighted		 †Longer lengths available
(consult factory)
Note: The products shown in this catalog are intended for industrial use only and should not be used to lift, support or otherwise transport people, unless you obtain a written authorization for each individual application from Rockford Ball Screw Co. The specifications and data in this publication are believed to be accurate and reliable. However, it is the responsibility of the product user to determine the suitability of Rockford Ball Screw products for a specific application.