KRE47PPA Stud 24 Mm, Cam Followers (stud-type Track Roller)
The KRE47PPA Cam-follower studded roller bearings are widely used in cam-driven and linear guidance systems in automated equipment, such as: cam mechanisms (automatic machine tool indexing plates), conveying equipment (track rollers), packaging machinery (cam-driven sealing), printing machinery, robot end effectors, and material handling equipment.
The KRE47PPA bearing is a Cam followers (stud-type track roller) with an inner diameter of 24 mm , an outer diameter of 47 mm, a width of 66 mm. GCr15SiMn rings, GCr15SiMn rolling mlement. It uses Between C2 and CN standard radial clearance, Seal on both sides type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
KRE47PPA bearings ( 24 mm x 47 mm x 66 mm) have the advantages of Easy to install, can withstand high radial loads and impacts, wear-resistant and runs smoothly, and are therefore widely used in the Conveying systems, automated equipment, cam mechanisms, machine tools and material handling machinery.
| Part Number | KRE47PPA |
| Bearing Type | Cam followers (stud-type track roller) |
| Hexagonal nut | M20x1.5 |
| Thread stud - G | M 20x1.5 |
| External design | PPA = Support roller with a PA66 axial sliding and sealing ring on both sides. Improved crowned profile of the outer ring running surface. have a hexagonal recess on both ends |
| Design | KRE = Cam follower fitted with a needle roller and cage assembly, with an eccentric collar pressed onto the stud. |
| Relubrication feature | Centre of stud head |
| Heat stabilized | 140 °C (280 °F) |
| Coating | No |
| Lubricant | Grease |
| Grease fitting | NIP A2x7,5 |
| Lubrication adapter | AP 10 |
| Sealing | Seal on both sides |
| Sealing type | Contact |
| Cage type | Window-type, roller centred |
| Cage Material | Sheet steel |
| Outer ring | Crowned |
| Feature for tightening | Hexagonal recess |
| Radial internal clearance | Between C2 and CN |
| Stud alignment | Centric stud with eccentric collar |
| Interchangeable | SKF KRE47PPA |
| Number of flanges, outer ring | 2 |
| Radial Dynamic - Cr [lbf] | 3304 |
| Radial Static - C0r [lbf] | 5507 |
| Fatigue load limit - Pu [lbf] | 651 |
| Max. dynamic radial load - Fr max. [lbf] | 5305 |
| Max. static radial loads - F0r max. [lbf] | 7530 |
| Speed ratings - nG [min–1] | 3000 |
| Outside - D Φ [inch] | 1.850 |
| Stud diameter [inch] | 0.945 |
| Outside diameter flange ring - d1 [inch] | 1.437 |
| Width - B [inch] | 2.598 |
| Inside - d φ [inch] | 0.945 |
| Width - C [inch] | 0.945 |
| Length shank on stud - B1 [inch] | 1.594 |
| Distance face outer ring to face side washer - C1 [inch] | 0.031 |
| Length thread - G1 [inch] | 0.827 |
| Seat diameter for lubrication accessories - M [inch] | 0.236 |
| Diameter of lubrication hole (shank) - M1 [inch] | 0.157 |
| Width across flats - SW [inch] | 0.394 |
| Chamfer - r1,2 min. [inch] | 0.039 |
| Distance lubrication hole to flange ring - B2 [inch] | 0.354 |
| Width locking collar - B3 [inch] | 0.709 |
| Eccentricity - c [inch] | 0.039 |
| Weight [lb] | 0.882 |
The KRE47PPA Cam follower stud roller bearings mainly consist of a stud (a threaded solid shaft), an outer ring (serving as the rolling track), needle rollers or rollers, a cage, and a sealing device. The stud head has a wrench groove or an internal hexagonal hole, and the outer surface of the outer ring can be designed as spherical or cylindrical to accommodate different tracks.
Cam follower stud roller bearings are easy to install, directly fixed to the equipment via the stud threads without the need for an additional bearing housing. They have high load-bearing capacity, with the needle roller structure providing high radial load capacity. The outer ring can be eccentrically adjusted to easily compensate for installation errors. They possess shock resistance and contamination resistance, making them suitable for harsh working conditions.
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