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BNF Set

Unfinished Shaft Ends
The simplest type with a single ball screw nut. It is designed to be mounted using the bolt holes drilled on the flange.
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Days to Ship Clear
Shaft O.D. (mm) Clear
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Lead (mm) Clear
Shaft Length Range (mm) Clear
Shaft Length (mm) Clear
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*Please contact THK if you need more than available quantity or out of stock items
Attributes Part Number Unit Price Quantity Days to Ship Item Total
Shaft O.D. (mm): 16
Lead (mm): 5
Shaft Length (mm): 410
BNF1605-2.5RRG1+410LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 16
Lead (mm): 5
Shaft Length (mm): 510
BNF1605-2.5RRG1+510LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 16
Lead (mm): 5
Shaft Length (mm): 610
BNF1605-2.5RRG1+610LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 16
Lead (mm): 5
Shaft Length (mm): 710
BNF1605-2.5RRG1+710LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 18
Lead (mm): 10
Shaft Length (mm): 410
BNF1810-2.5RRG1+410LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 18
Lead (mm): 10
Shaft Length (mm): 510
BNF1810-2.5RRG1+510LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 18
Lead (mm): 10
Shaft Length (mm): 610
BNF1810-2.5RRG1+610LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 18
Lead (mm): 10
Shaft Length (mm): 710
BNF1810-2.5RRG1+710LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 18
Lead (mm): 10
Shaft Length (mm): 810
BNF1810-2.5RRG1+810LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 410
BNF2005-5RRG1+410LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 510
BNF2005-5RRG1+510LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 610
BNF2005-5RRG1+610LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 610
BNF2005-5RRG1+610LC5B
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 710
BNF2005-5RRG1+710LC5A
Days to Ship: 1 - 3 days
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 710
BNF2005-5RRG1+710LC5B
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 810
BNF2005-5RRG1+810LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 20
Lead (mm): 5
Shaft Length (mm): 1010
BNF2005-5RRG1+1010LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 25
Lead (mm): 5
Shaft Length (mm): 520
BNF2505-5RRG1+520LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 25
Lead (mm): 5
Shaft Length (mm): 620
BNF2505-5RRG1+620LC5A
Days to Ship: 2 - 3 weeks*
Shaft O.D. (mm): 25
Lead (mm): 5
Shaft Length (mm): 720
BNF2505-5RRG1+720LC5A
Days to Ship: 2 - 3 weeks*
Page
Screw shaft outer diameterd LeadPh Model No. Ball center-to-center diameterdp Thread minor diameterdc No. of loaded circuitsRows × turns Basic load rating Nut dimensions Nut mass
DynamicC StaticC0 Outer diameterD Flange diameterD1 Overall lengthL1 H B1 PCD d1 × d2 × h GreasingholeA
mm mm mm mm kN kN mm mm mm mm mm mm mm kg
16 5 BNF1605-2.5 16.75 13.2 1×2.5 7.4 13.9 40 60 41 10 31 50 4.5×8×4.5 M6 0.37
18 10 BNF1810-2.5 18.8 15.5 1×2.5 7.8 15.9 42 65 69 12 57 53 5.5×9.5×5.5 M6 0.67
20 5 BNF2005-5 20.75 17.2 2×2.5 15.1 35 44 67 56 11 45 55 5.5×9.5×5.5 M6 0.57
25 5 BNF2505-5 25.75 22.2 2×2.5 16.7 44 50 73 55 11 44 61 5.5×9.5×5.5 M6 0.75
10 BNF2510A-2.5 26.3 21.4 1×2.5 15.8 33 58 85 70 18 52 71 6.6×11×6.5 M6 1.43
28 6 BNF2806-5 28.75 25.2 2×2.5 17.5 49.4 55 85 68 12 56 69 6.6×11×6.5 M6 1.13
32 5 BNF3205-5 32.75 29.2 2×2.5 18.5 56.4 58 85 56 12 44 71 6.6×11×6.5 M6 0.93
10 BNF3210A-5 33.75 26.4 2×2.5 47.2 112.7 74 108 100 15 85 90 9×14×8.5 M6 2.8
36 10 BNF3610-5 37.75 30.5 2×2.5 50.1 126.4 75 120 111 18 93 98 11×17.5×11 M6 3.4
40 10 BNF4010-5 41.75 34.4 2×2.5 52.7 141.1 82 124 103 18 85 102 11×17.5×11 M6 3.58
12 BNF4012-5 42 34.1 2×2.5 61.6 158.3 84 126 119 18 101 104 11×17.5×11 M6 4.2
50 10 BNF5010-5 51.75 44.4 2×2.5 58.2 176.4 93 135 103 18 85 113 11×17.5×11 PT 1/8 4.4
Model No. Standardstocksymbol Screw shaft dimensions
Overall lengthL l0 l1 l2 d3 d4 Shaft mass
mm mm mm mm mm mm kg/m
BNF1605-2.5A410200501601612.80.92
510300501601612.80.92
610400501601612.80.92
710500501601612.81.25
BNF1810-2.5A410200501601815.31.62
510300501601815.31.62
610400501601815.31.62
710500501601815.31.62
810600501601815.31.62
BNF2005-5A410200501602015.31.65
510300501602015.31.65
610400501602015.31.65
710500501602015.31.65
810600501602016.81.65
1010800501602016.81.65
B610300502602016.81.65
710400502602016.81.65
BNF2505-5A520300601602520.32.84
620400601602520.32.84
720500601602520.32.84
820600601602520.32.84
1020800601602521.82.84
12201000601602521.82.84
14201200601602521.82.84
B720400602602521.82.84
820500602602521.82.84
BNF2510A-2.5A620400601602520.32.68
820600601602520.32.68
1020800601602520.32.68
12201000601602520.32.68
14201200601602520.32.68
BNF2806-5A520300601602820.33.89
620400601602820.33.89
720500601602820.33.89
920700601602820.33.89
1020800601602824.83.89
12201000601602824.83.89
14201200601602824.83.89
B720400702502824.83.89
920500703502824.83.89
1100700703302824.83.89
BNF3205-5A730500701603225.35.03
930700701603225.35.03
12301000701603225.35.03
14301200701603225.35.03
16301400701603227.85.03
18301600701603227.85.03
BNF3210A-5A730500701603225.33.66
930700701603225.33.66
14301200701603225.33.66
18301600701603225.33.66
BNF3610-5A730500701603630.35.03
930700701603630.35.03
14301200701603630.35.03
18301600701603630.35.03
B9305001003303630.35.03
11007001003003630.35.03
183012001005303630.35.03
BNF4010-5A12301000701604030.36.59
17301500701604030.36.59
20301800701604030.36.59
22302000701604030.36.59
BNF4012-5A12301000701604030.36.39
17301500701604030.36.39
20301800701604030.36.39
22302000701604030.36.39
B173012001004304033.86.39
203012001007304033.86.39
BNF5010-5A130010001002005040.311.36
180015001002005040.311.36
230020001002005040.311.36
280025001002005040.311.36
For more detailed specifications, please download the Product Catalog with the link in the Downloads section of this product page.
Model Screw shaft outer diameter Lead(in mm) No. of circuits Seals Clearance Shaft length(in mm)*1 Accuracy Standard stock symbol
BNF 16 05 - 2.5 RR G1 + 410L C5 A
BNF 16~50 04~12 Various RR : Labyrinth seal G1 : 0 to 0.01 mm Length in millimeters then "L" C5 A
  B
Note 1: See the Specifications tab to see standard sizes available.