Accessories BSBD Series Bearings for ball screw support
TM
NSKHPS BSBD Series NSKHPS BSBD Series
The BSBD Series are double-row bearing units for the support of ball screws that can accurately and Bearing number
quickly position a work piece or a spindle unit. Example: BS F 30 80 DDU H P2B DT
Features Bearing type
Arrangement Note:
The bearings of this series are double-row angular contact P2B is an accuracy class
F: Flange type
thrust ball bearings with a 60° contact angle and a single N: No Flange type Accuracy specific to the BSBD Series,
outer ring. The specifications are the same as those of indicating the following:
Bore diameter Preload Running accuracy:
the NSKTAC bearings, both series being optimized for the ISO Class 2
Outer diameter Seal type Others: NSK-specific
support of ball screws in machine tools. All BSBD Series
bearings are equipped with a rubber contact seal and A Seal A Matched DT pairs
prepacked with high performance grease. Rubber contact seal on both sides. Triple BSBD bearings are available in matched DT pairs
lip structure provides high grease sealing for applications with large
A BSN Type
performance and dust resistance. external loads or where
The BSN type of ball screw support bearings are
high rigidity and long life
double row angular contact thrust ball bearings in a
are required. The mating
back-to-back arrangement, with a single outer ring.
surfaces of the 2- row
The bearings are prepacked with high performance grease. Lubrication holes allow for
bearing set are controlled
relubrication during operation if necessary. The contact seal offers minimized friction and
for offset, so as to have no
temperature rise while providing excellent sealing performance.
impact on the preload of
Mating surfaces controlled
A BSF Type each individual bearing. for offset
The BSF type of bearings is equivalent to the BSN range Lubrication holes
of bearings, with bolt holes on the outer ring for easy & Set screws B 2B
direct mounting. Two lubrication holes – one in the outer r r r r
Accessories
surface and one in the face of the outer ring – allow for
relubrication during operation if required. If not used,
these holes are closed off with set screws. An extraction r1 r1 r1 r1 φD b φd a
groove on the outer surface of the outer ring aids removal φD φd φD φd
of the bearing.
Extraction groove Bolt holes
Single product Matched DT pairs
Note: BSF type bearings are supplied with seal and set screws
included. Mounting bolts are not included.
BSN Type Single product BSN Type Matched DT pairs
(2) (2)
Boundary Dimensions Abutment and Fillet Basic Load Rating Limiting Starting torque Recommended Boundary Dimensions Abutment and Fillet Basic Load Rating Limiting Starting torque Recommended
(mm) Dimensions (mm) Contact (kN) Limiting(1) Axial -1
Dimensions (mm) Contact Limiting(1) Axial -1
Bearing Preload Mass speed (min ) (N·m) Clamping Bearing (mm) (kN) Mass speed (min ) (N·m) Clamping
Angle Axial Load Rigidity Angle Axial Load Rigidity
Numbers r r1 jda jDb (°) Ca Coa (N) (kg) force Numbers r r1 jda jDb (°) Ca Coa (kg) force
d D B (kN) (N/µm) Greased H d D 2B (kN) (N/µm) Greased H
(min) (min) (min) (max) (Dynamic) (Static) (N) (min) (min) (min) (max) (Dynamic) (Static) (N)
BSN1242 12 42 25 0.6 0.3 15 33 60 18.5 24.0 17.6 720 375 0.20 8 000 0.038 4 030 BSN1747-DT 17 47 50 0.6 0.6 21 37 60 33.0 59.5 42.5 790 0.46 6 700 0.10 4 400
BSN1545 15 45 25 0.6 0.3 19 35 60 19.4 26.9 19.4 675 400 0.22 7 100 0.034 4 050 BSN2052-DT 20 52 56 0.6 0.6 24 43 60 43.0 82.0 58.5 1 180 0.62 5 800 0.26 7 600
BSN1747 17 47 25 0.6 0.6 21 37 60 20.3 29.7 21.2 880 450 0.23 6 700 0.05 4 400 BSN2557-DT 25 57 56 0.6 0.6 29 48 60 46.0 96.0 68.0 1 370 0.71 5 100 0.32 8 100
BSN2052 20 52 28 0.6 0.6 24 43 60 26.4 41.0 29.3 1 885 650 0.31 5 800 0.13 7 600
BSN3062-DT 30 62 56 0.6 0.6 34 53 60 49.0 111 77.0 1 580 0.80 4 500 0.37 8 600
BSN2557 25 57 28 0.6 0.6 29 48 60 28.3 48.0 34.0 2 245 750 0.36 5 100 0.16 8 100
BSN3072-DT 30 72 76 0.6 0.6 35 64 60 98.0 188 133 1 800 1.47 3 900 1.17 11 100
BSN3062 30 62 28 0.6 0.6 34 53 60 30.0 55.5 38.5 2 625 850 0.40 4 500 0.19 8 600
BSN3572-DT 35 72 68 0.6 0.6 40 62 60 68.0 155 104 1 630 1.32 3 800 0.41 13 500
BSN3072 30 72 38 0.6 0.6 35 64 60 60.5 94.0 66.5 4 855 950 0.74 3 900 0.59 11 100
BSN3572 35 72 34 0.6 0.6 40 62 60 42.0 77.5 52.0 2 630 900 0.66 3 800 0.21 13 500 BSN4075-DT 40 75 68 0.6 0.6 46 67 60 72.0 176 117 1 850 1.30 3 500 0.49 14 100
BSN4075 40 75 34 0.6 0.6 46 67 60 44.5 88.0 58.5 3 065 1 000 0.65 3 500 0.24 14 100 BSN4090-DT 40 90 92 0.6 0.6 46 80 60 128 269 182 2 300 2.76 3 100 2.03 18 700
BSN4090 40 90 46 0.6 0.6 46 80 60 78.5 135 91.0 7 220 1 200 1.38 3 100 1.02 18 700 BSN5090-DT 50 90 68 0.6 0.6 56 82 60 78.0 220 143 2 330 1.86 2 800 0.66 15 400
BSN5090 50 90 34 0.6 0.6 56 82 60 48.0 110 71.5 4 020 1 250 0.93 2 800 0.33 15 400 BSN50110-DT 50 110 108 0.6 0.6 57 98 60 188 440 299 2 690 4.92 2 500 2.11 19 100
BSN50110 50 110 54 0.6 0.6 57 98 60 116 219 149 7 435 1 400 2.46 2 500 1.06 19 100 3. Inner rings can be separable easily. Please push or pull bearings by clamping innerring at mounting
BSN60110 60 110 45 0.6 0.6 68 100 60 86.5 187 126 4 780 1 300 1.82 2 400 0.50 20 900 and dismounting.
Notes: 1. Permissible axial load equals 0.7 times of limiting axial load. 4. Abutment and fillet simensionsare recommendable values for the use of standard Machine tool applications.
2. The values indicate starting torque of preloaded bearings, not including seal torque. For heavy load applications, please ask NSK.
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Accessories BSBD Series Bearings for ball screw support
TM
NSKHPS BSBD Series
(BSF60145 Only) Type 1 Type 2
BSF Type Single product
(1)
Limiting Axial Recommended
(2)
Boundary Dimensions (mm) Basic Load Rating (kN) Limiting speed Reference Dimensions (mm) Mounting Bolts Starting torque
Bearing Mass -1
(min ) Preload (N·m)
Axial Load Rigidity Type Clamping Force
Numbers d D B r r1 Ca Coa (kg) Grease d1 D1 J d2 l b t Bolt Dia. Number of (N) H
(min) (min) (Dynamic) (Static) (kN) (N/µm) Bolts (N)
BSF1255 12 55 25 0.6 0.3 18.5 24.0 17.6 375 0.37 8 000 23.7 32.7 42 6.8 17 3 3 x 120° b M6 3 720 0.038 4 030
BSF1560 15 60 25 0.6 0.3 19.4 26.9 19.4 400 0.44 7 100 26.7 35.7 46 6.8 17 3 3 x 120° b M6 3 675 0.034 4 050
BSF1762 17 62 25 0.6 0.6 20.3 29.7 21.2 450 0.46 6 700 28.1 37.7 48 6.8 17 3 3 x 120° b M6 3 890 0.05 4 400
BSF2068 20 68 28 0.6 0.6 26.4 41.0 29.3 650 0.61 5 800 32.6 43 53 6.8 19 3 4 x 90° b M6 4 1 885 0.13 7 600
BSF2575 25 75 28 0.6 0.6 28.3 48.0 34.0 750 0.73 5 100 37.6 48 58 6.8 19 3 4 x 90° b M6 4 2 245 0.16 8 100
BSF3080 30 80 28 0.6 0.6 30.0 55.5 38.5 850 0.79 4 500 42.6 53 63 6.8 19 3 6 x 60° b M6 6 2 625 0.19 8 600
BSF30100 30 100 38 0.6 0.6 60.5 94 66.5 950 1.71 3 900 49.1 64.4 80 8.8 30 3 8 x 45° M8 8 4 855 0.59 11 100
Accessories
b
BSF3590 35 90 34 0.6 0.6 42.0 77.5 52.0 900 1.20 3 800 53.1 62.2 75 8.8 25 3 4 x 90° b M8 4 2 630 0.21 13 500
BSF40100 40 100 34 0.6 0.6 44.5 88.0 58.5 1 000 1.49 3 500 55.1 67.2 80 8.8 25 3 4 x 90° b M8 4 3 065 0.24 14 100
BSF40115 40 115 46 0.6 0.6 78.5 135 91.0 1 200 2.56 3 100 63.1 80.1 94 8.8 36 3 12 x 30° b M8 12 7 220 1.02 18 700
BSF50115 50 115 34 0.6 0.6 48.0 110 71.5 1 250 1.89 2 800 70.1 82.2 94 8.8 25 3 6 x 60° b M8 6 4 020 0.33 15 400
BSF50140 50 140 54 0.6 0.6 116 219 149 1 400 4.46 2 500 78.1 97.5 113 11 45 3 12 x 30° b M10 12 7 435 1.06 19 100
BSF60145 60 145 45 0.6 0.6 86.5 187 126 1 300 4.06 2 400 83.1 99.3 120 8.8 35 3 8 x 45° b M8 8 4 780 0.50 20 900
BSF Type Matched pairs
Boundary Dimensions (mm) Basic Load Rating (kN) Limiting(1) Axial Limiting speed
Reference Dimensions (mm) Mounting Bolts Starting torque(2) Recommended
Bearing Mass (min-1) (N·m)
Axial Load Rigidity Type Clamping Force
Numbers d D 2B r r1 Ca Coa (kg) Grease d1 D1 J d2 l b t Bolt Dia. Number of
H
(min) (min) (Dynamic) (Static) (kN) (N/µm) Bolts (N)
BSF1762-DT 17 62 50 0.6 0.6 33.0 59.5 42.5 790 0.890 6 700 28.1 37.7 48 6.8 42 3 6 x 60° a M6 5 0.10 4 400
BSF2068-DT 20 68 56 0.6 0.6 43.0 82.0 58.5 1 180 1.17 5 800 32.6 43 53 6.8 47 3 8 x 45° a M6 7 0.26 7 600
BSF2575-DT 25 75 56 0.6 0.6 46.0 96.0 68.0 1 370 1.46 5 100 37.6 48 58 6.8 47 3 8 x 45° a M6 7 0.32 8 100
BSF3080-DT 30 80 56 0.6 0.6 49.0 111 77.0 1 580 1.58 4 500 42.6 53 63 6.8 47 3 12 x 30° a M6 11 0.37 8 600
BSF30100-DT 30 100 76 0.6 0.6 98.0 188 133 1 800 3.41 3 900 49.1 64.4 80 8.8 68 3 8 x 45° b M8 8 1.17 11 100
BSF3590-DT 35 90 68 0.6 0.6 68.0 155 104 1 630 2.30 3 800 53.1 62.2 75 8.8 59 3 8 x 45° a M8 7 0.41 13 500
BSF40100-DT 40 100 68 0.6 0.6 72.0 176 117 1 850 2.88 3 500 55.1 67.2 80 8.8 59 3 8 x 45° a M8 7 0.49 14 100
BSF40115-DT 40 115 92 0.6 0.6 128 269 182 2 300 5.12 3 100 63.1 80.1 94 8.8 82 3 12 x 30° b M8 12 2.03 18 700
BSF50115-DT 50 115 68 0.6 0.6 78.0 220 143 2 330 3.78 2 800 70.1 82.2 94 8.8 59 3 12 x 30° a M8 11 0.66 15 400
BSF50140-DT 50 140 108 0.6 0.6 188 440 299 2 690 8.92 2 500 78.1 97.5 113 11 99 3 12 x 30° b M10 12 2.11 19 100
Notes: 1. Permissible axial load equals 0.7 times of limiting axial load. 2. The values indicate starting torque of preloaded bearings, not including seal torque.
The values refer to the limiting load of the bearing only, without taking the mounting bolts into 3. Inner rings can be separable easily. Please push or pull bearings by clamping inner ring at mounting
account. and dismounting.
B427 B428
