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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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Shaft O.D. (mm) Clear
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Lead (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 Online Store
Unit Price (USD)
Quantity Days to Ship Item Total
Shaft O.D. (mm): 50
Lead (mm): 10
Shaft Length (mm): 2800
BNF5010-5RRG1+2800LC5A
Days to Ship: 3 - 4 weeks
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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.