Catalog excerpts
MOTION & CONTROL NSK ROLLED BALL SCREWS
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Table of Contents Rolled Ball Screw R Series - Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 Rolled Ball Screws - Reference Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3 Rolled Ball Screws RNFTL - Flanged Nut (fine, medium lead) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 4 to 7 Rolled Ball Screws RNFTL - Flanged Nut (high helix lead) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
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Rolled Ball Screw R Series (1) Product classification NSK rolled ball screws are classified by nut model as shown in Table 1. Table 1 Classification of rolled ball screws Nut model Recirculation system Nut shape RNFTL Flanged, Tube projecting type Lead classification Page Return tube type Fine, medium lead 6 High helix lead 8 RNFBL Flanged Circular Return tube type Fine, medium lead 10 RNCT V-thread (no flange) Projecting tube type Return tube type Fine lead 12 RNSTL Square type Return tube type Small, medium leads 14 End cap type High helix lead 16 RNFCL Flanged Circular Ultra high helix...
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Rolled Ball Screws Reference number of rolled ball screw is described below. Please use reference number to order, or for a price inquiry. Product code (rolled nut) Screw shaft diameter (mm) Screw shaft (example) Product code (Rolled screw shaft) Screw shaft diameter (mm) Seal code S: With seal No code: Without seal Effective turns of balls (turns of _balls x number of circuit) Internal design code Screw shaft length (x 100 mm) Internal design code (8) Combinations of shaft diameter/lead Combinations are shown below in Table 2. The table also indicates nut model codes and page numbers to...
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R Series: Rolled Ball Screws Tube type: Flanged nut (fine, medium lead) Ball nut dimensions Outside dia. D RNFTL 1003A3.5 RNFTL 1006A2.5S RNFTL 1208A2.5S RNFTL 1404A3.5S RNFTL 1405A2.5S RNFTL 1610A2.5 RNFTL 1610A2.5S RNFTL 1808A3.5 RNFTL 1808A3.5S RNFTL 2005A2.5 RNFTL 2005A2.5S RNFTL 2010A2.5 RNFTL 2010A2.5S RNFTL 2505A5 RNFTL 2505A5S RNFTL 2510A2.5 RNFTL 2510A2.5S RNFTL 2510A5 RNFTL 2510A5S Lead Ball diameter Ball circle diameter Root diameter Effective turns of balls d Ball nut no. Shaft diameter l Dw dm dr Turns x circuits Dynamic Ca Static C oa 10 10 12 14 14 3 6 8 4 5 2.381 2.381 2.778...
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R Series: Rolled Ball Screws Tube type: Flanged nut (fine, medium lead) RNFTL 2806A2.5 RNFTL 2806A2.5S RNFTL 2806A5 RNFTL 2806A5S RNFTL 3210A5 RNFTL 3210A5S RNFTL 3610A2.5 RNFTL 3610A2.5S RNFTL 3610A5 RNFTL 3610A5S RNFTL 4010A7 RNFTL 4010A7S RNFTL 4512A5 RNFTL 4512A5S RNFTL 5010A7 RNFTL 5010A7S RNFTL 5016A5 RNFTL 5016A5S Lead Ball diameter Ball circle diameter Root diameter Effective turns of balls d Ball nut no. Shaft diameter l Dw dm dr Turns x circuits Dynamic Ca Static C oa 2.5 x 1 7430 20300 28 6 3.175 28.5 25.0 Basic load rating (N) 6.35 33.75 27.0 36 10 6.35 37 13500 2.5 x 2 35700...
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R Series: Rolled Ball Screws Tube type: Flanged nut (high helix lead) Ball nut dimensions Outside dia. D RNFTL 1212A3 RNFTL 1616A3 RNFTL 1616A3S RNFTL 2020A3 RNFTL 2020A3S RNFTL 2525A3 RNFTL 2525A3S RNFTL 3232A3 RNFTL 3232A3S RNFTL 4040A3 RNFTL 4040A3S Lead Ball diameter Ball circle diameter Root diameter Effective turns of balls d Ball nut no. Shaft diameter l Dw dm dr Turns x circuits Dynamic Ca Static C oa 12 12 2.381 12.65 10.1 1.5 x 2 3360 6270 0.10 24 16 16 2.778 16.65 13.6 1.5 x 2 4880 9650 0.10 30 20 20 3.175 20.75 17.3 1.5 x 2 7010 15400 0.10 35 25 25 3.969 26 22.0 1.5 x 2 10500...
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R Series: Rolled Ball Screws Return tube type, nut with V-thread (fine lead) Ball nut dimensions Outside dia. D RNCT 1003A3.5 RNCT 1404A3.5S RNCT 1405A2.5S RNCT 1808A3.5 RNCT 1808A3.5S RNCT 2005A2.5 RNCT 2005A2.5S RNCT 2505A5 RNCT 2505A5S RNCT 2510A5 RNCT 2510A5S RNCT 2806A5 RNCT 2806A5S RNCT 3210A5 RNCT 3210A5S RNCT 3610A5 RNCT 3610A5S RNCT 4010A7 RNCT 4010A7S RNCT 4512A5 RNCT 4512A5S RNCT 5010A7 RNCT 5010A7S RNCT 5016A5 RNCT 5016A5S Lead Ball diameter Ball circle diameter Root diameter Effective turns of balls d Ball nut no. Shaft diameter l Dw dm dr Turns x circuits Dynamic Ca Static C...
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R Series: Rolled Ball Screws End cap type, flanged nut (high helix lead) Ball nut dimensions Outside dia. D RNFCL 1212A3 RNFCL 1212A6 RNFCL 1520A3 RNFCL 1520A3S RNFCL 1616A3 RNFCL 1616A3S RNFCL 1616A6 RNFCL 1616A6S RNFCL 2020A3 RNFCL 2020A3S RNFCL 2020A6 RNFCL 2020A6S RNFCL 2525A3 RNFCL 2525A3S RNFCL 2525A6 RNFCL 2525A6S RNFCL 3232A3 RNFCL 3232A3S RNFCL 3232A6 RNFCL 3232A6S RNFCL 4040A3 RNFCL 4040A3S RNFCL 4040A6 RNFCL 4040A6S RNFCL 5050A3 RNFCL 5050A3S RNFCL 5050A6 RNFCL 5050A6S Shaft diameter Lead Ball diameter Ball circle diameter Root diameter Effective turns of balls d Ball nut no. l...
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R Series: Rolled Ball Screws End cap type, flanged nut (ultra high helix lead) RNFCL 1632A2 RNFCL 1632A2S RNFCL 1632A3 RNFCL 1632A3S RNFCL 1632A6 RNFCL 1632A6S RNFCL 2040A2 RNFCL 2040A2S RNFCL 2040A3 RNFCL 2040A3S RNFCL 2040A6 RNFCL 2040A6S RNFCL 2550A2 RNFCL 2550A2S RNFCL 2550A3 RNFCL 2550A3S RNFCL 2550A6 RNFCL 2550A6S RNFCL 3264A3 RNFCL 3264A3S RNFCL 3264A6 RNFCL 3264A6S RNFCL 4080A3 RNFCL 4080A3S RNFCL 4080A6 RNFCL 4080A6S Shaft diameter Lead Ball diameter Ball circle diameter Root diameter Effective turns of balls d Ball nut no. l Dw dm dr Turns x circuits Dynamic Ca Static C oa 0.7 x 4...
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Ball Screw Support Units - Classification Table 5 Support unit categories Application Bearing bore Bearing seat diameter Page Angular contact ball bearing ø6~ø25 26 Simple support side Deep groove ball bearing ø6~ø25 28 Support side Bearing in use WBK**-01 Fixed support side WBK**S-01 Small equipment, light load Shape Square Small equipment, light load Angular contact ball bearing 30 WBK**-11 Fixed support side ø6~ø25 Round Machine tools, heavy load Thrust angular contact ball bearing 32 WBK**DF*-31 Fixed support side ø17~ø40 Round Features • Short delivery time: Standardized items in...
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