IKO CF4BUU Cam Follower, 4 mm stud, 12 mm OD, Caged, Sealed, Cylindrical Outer Ring
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This page covers 18 IKO CF Series cam followers (CF3BUU to CF30-2BUU, 3 to 30 mm stud): a hexagon hole in the stud head, needle rollers in a cage, sealed type construction and a cylindrical outer ring. Choose the size in the options above; each variant has its own dimensions and ratings in the Model Details.
The CF series is the basic stud type in the IKO cam follower range, with stud diameters from 3 mm to 30 mm. A cam follower is a bearing with a stud, with needle rollers inside a thick-walled outer ring. The outer ring rotates and runs directly on the mating track (cam guide surface), so cam followers suit cam mechanisms and linear motions and are used in machine tools, industrial robots, electronic devices and office automation (OA) equipment.
In the part number, the number after CF is the stud diameter in mm; B is the hexagon hole in the stud head, V is the full complement type (no V is with cage), UU is the sealed type (no UU is the shield type), and R is the crowned outer ring (no R is cylindrical). Every model on this page is sealed type, with cage, cylindrical outer ring.
Where this product is used
- Cam mechanisms, with the outer ring running directly on the cam track
- Linear motion and follower applications
- Machine tools and industrial robots
- Electronic devices and office automation (OA) equipment
Features
- Stud type with a hexagon hole in the stud head: hold the hexagon hole with a hex key and tighten the nut with a spanner
- Needle rollers in a cage: a small coefficient of friction and suited to high speed rotations
- Sealed type: seals fitted in the narrow clearances keep foreign substances out
- Cylindrical outer ring: a large contact area on the mating guide surface, suited to large loads or a low hardness guide surface
- Prepacked with grease
- Supplied with a nut and, on the larger studs, a grease nipple (see the Model Details for each size)
- Basic dynamic load rating C 1,500 to 45,400 N and static load rating C0 1,020 to 85,100 N (each size in the Model Details)
- Track capacity 1,360 to 59,300 N on a 40 HRC mating surface
Key specifications
| Specification | Detail |
|---|---|
| Type | Standard type cam follower (stud type) |
| Models | CF3BUU to CF30-2BUU (18 sizes) |
| Stud diameter d1 | 3 to 30 mm |
| Thread G | M3 x 0.5 to M30 x 1.5 |
| Outer ring diameter D | 10 to 90 mm |
| Outer ring width C | 7 to 35 mm |
| Rolling elements | Needle rollers with cage |
| Seal | Sealed type (UU in the part number) |
| Outer ring | Cylindrical outer ring |
| Stud head | Hexagon hole in the stud head (B in the part number) |
| Basic dynamic load rating C | 1,500 to 45,400 N |
| Basic static load rating C0 | 1,020 to 85,100 N |
| Maximum allowable static load | 384 to 85,100 N |
| Track capacity (mating surface 40 HRC) | 1,360 to 59,300 N |
| Lubrication | Prepacked with grease |
| Recommended mounting hole tolerance for the stud | H7 |
| Brand | IKO (Nippon Thompson Co., Ltd., Japan) |
Available sizes
Show all 18 sizes with dimensions, load ratings and mass
| Model | Stud d1 (mm) | Thread G | OD D (mm) | Width C (mm) | Length B1 (mm) | C (N) | C0 (N) | Mass (g) |
|---|---|---|---|---|---|---|---|---|
| CF3BUU | 3 | M3 x 0.5 | 10 | 7 | 17 | 1,500 | 1,020 | 4.3 |
| CF4BUU | 4 | M4 x 0.7 | 12 | 8 | 20 | 2,070 | 1,590 | 7.4 |
| CF5BUU | 5 | M5 x 0.8 | 13 | 9 | 23 | 2,520 | 2,140 | 10.3 |
| CF6BUU | 6 | M6 x 1 | 16 | 11 | 28.2 max | 3,660 | 3,650 | 18.5 |
| CF8BUU | 8 | M8 x 1.25 | 19 | 11 | 32.2 max | 4,250 | 4,740 | 28.5 |
| CF10BUU | 10 | M10 x 1.25 | 22 | 12 | 36.2 max | 5,430 | 6,890 | 45 |
| CF10-1BUU | 10 | M10 x 1.25 | 26 | 12 | 36.2 max | 5,430 | 6,890 | 60 |
| CF12BUU | 12 | M12 x 1.5 | 30 | 14 | 40.2 max | 7,910 | 9,790 | 95 |
| CF12-1BUU | 12 | M12 x 1.5 | 32 | 14 | 40.2 max | 7,910 | 9,790 | 105 |
| CF16BUU | 16 | M16 x 1.5 | 35 | 18 | 52.1 max | 12,000 | 18,300 | 170 |
| CF18BUU | 18 | M18 x 1.5 | 40 | 20 | 58.1 max | 14,800 | 25,200 | 250 |
| CF20-1BUU | 20 | M20 x 1.5 | 47 | 24 | 66.1 max | 20,700 | 34,600 | 385 |
| CF20BUU | 20 | M20 x 1.5 | 52 | 24 | 66.1 max | 20,700 | 34,600 | 460 |
| CF24BUU | 24 | M24 x 1.5 | 62 | 29 | 80.1 max | 30,500 | 52,600 | 815 |
| CF24-1BUU | 24 | M24 x 1.5 | 72 | 29 | 80.1 max | 30,500 | 52,600 | 1,140 |
| CF30BUU | 30 | M30 x 1.5 | 80 | 35 | 100 max | 45,400 | 85,100 | 1,870 |
| CF30-1BUU | 30 | M30 x 1.5 | 85 | 35 | 100 max | 45,400 | 85,100 | 2,030 |
| CF30-2BUU | 30 | M30 x 1.5 | 90 | 35 | 100 max | 45,400 | 85,100 | 2,220 |
Length B1 is the overall length with the stud; where marked max it is a maximum. C is the basic dynamic load rating and C0 the basic static load rating. Mass is for the product body only: the nut, grease nipple and other accessories are not included.
Selecting the right option
Pick the outside diameter of the outer ring (dimension D, in mm) in the options above: the stud size, thread and ratings follow from the model number shown in the Model Details. All sizes on this page are stud types with a hexagon hole in the stud head and a cage.
Some stud sizes come with more than one outer ring, so check the diameter against your cam track: 22 mm OD and 26 mm OD (CF10BUU and CF10-1BUU); 30 mm OD and 32 mm OD (CF12BUU and CF12-1BUU); 47 mm OD and 52 mm OD (CF20-1BUU and CF20BUU); and others in the size table.
Match the stud diameter and thread to your mounting hole and nut: the Model Details list the thread, the thread length and the hexagon hole size.
This page is the cylindrical outer ring type. A cylindrical ring has a large contact area with the mating guide surface and suits applications where the applied load is large or the guide surface hardness is low.
Every model here has a cage, which gives a small coefficient of friction and suits high speed rotations.
Fitting and use
Make the centre axis of the mounting hole perpendicular to the direction of travel and match the stud shoulder accurately with the seating surface given by dimension f (min.) in the Model Details. Keep the chamfer on the mounting hole as small as possible (C0.5 or so), and do not hit the flange head directly with a hammer, because that can lead to irregular rotation or cracking.
Hold the hexagon hole with a hex key and tighten the nut with a spanner: turning the hexagon hole itself to tighten can damage it. Do not exceed the maximum tightening torque in the Model Details, because an over-tightened thread can break. Where loosening is possible, use a lock nut, spring washer or self-locking nut.
The mark on the flange head shows the oil hole position on the raceway: keep the oil hole out of the loading zone. The recommended mounting hole tolerance for the stud is H7.
Lubrication: the models on this page are prepacked with grease.
Track capacity is the load that can be applied continuously on a steel cam guide surface of 40 HRC without deforming or indenting it. For a different hardness it is multiplied by the track capacity factor (0.58 at 30 HRC): ask AIMS if you need the factor for your guide surface.
If you are unsure which size suits your cam track and mounting, send AIMS the part number or the dimensions and we will help you confirm it.
Related products
Other IKO CF series pages (other outer ring, rolling element, seal or material types): CF series cam followers, full complement, sealed, cylindrical, 6 to 30 mm stud, CF series cam followers, with cage, sealed, crowned, 5 to 30 mm stud, CF series stainless steel cam followers, with cage, sealed, cylindrical, 3 to 10 mm stud, CF series cam followers, full complement, sealed, crowned, 6 to 30 mm stud and CF series stainless steel cam followers, with cage, sealed, crowned, 6 to 20 mm stud. Related stud types: CFE series eccentric cam followers, with cage, sealed, cylindrical, M6 to M30 thread and NUCF series cylindrical roller cam followers, full complement, shield type, crowned, 10 to 30 mm stud.
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IKO CF Series Cam Followers, Hex Hole, With Cage, Sealed, Cylindrical Outer Ring, 3 to 30 mm stud: 12
SKU: A0156248 | Model: CF4BUU/IKO
IKO CF4BUU cam follower, 4 mm stud, 12 mm x 8 mm wide, with cage, sealed, cylindrical outer ring, C 2,070 N, C0 1,590 N. Order online from AIMS Industrial.