NATR 17 PPA Bore 17 Mm, Support Rollers With Flange Rings, With An Inner Ring
The NATR 17 PPA Support rollers (yoke-type track rollers) are widely used in heavy-duty linear motion and cam-driven systems, such as: forklift masts (lifting rollers), AGV trolleys (load-bearing rollers), stacker cranes (guide rails), machine tool guide rails (support rollers), automated production lines, and track tensioning devices for construction machinery.
The NATR 17 PPA bearing is a Support rollers with flange rings, with an inner ring with an inner diameter of 17 mm , an outer diameter of 40 mm, a width of 21 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.
NATR 17 PPA bearings ( 17 mm x 40 mm x 21 mm) have the advantages of Featuring a thick-walled outer ring and integral bearing design, it boasts high load-bearing capacity and rigidity, making it particularly suitable for heavy-duty rail support applications, and are therefore widely used in the Conveyor, Material handling equipment, forklifts, stacker cranes, automated warehouses and rail guide systems.
| Part Number | NATR 17 PPA |
| Bearing Type | Support rollers with flange rings, with an inner ring |
| 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. |
| Design | NATR = Support roller with two pressed-on flange rings, fitted with a needle roller and cage assembly. |
| Relubrication feature | Yes |
| Heat stabilized | 140 °C (280 °F) |
| Coating | No |
| Lubricant | Grease |
| Axial guidance of outer ring | Yes |
| Sealing | Seal on both sides |
| Sealing type | Contact |
| Cage type | Window-type, centring depends on size and design |
| Cage Material | Sheet steel |
| Outer ring | Crowned |
| Radial internal clearance | Between C2 and CN |
| Interchangeable | SKF NATR 17 PPA |
| Number of flanges, outer ring | 2 |
| Radial Dynamic - Cr [lbf] | 2360 |
| Radial Static - C0r [lbf] | 3282 |
| Fatigue load limit - Pu [lbf] | 388 |
| Max. dynamic radial load - Fr max. [lbf] | 2810 |
| Max. static radial loads - F0r max. [lbf] | 4046 |
| Speed ratings - nG [min–1] | 3400 |
| Outside - D Φ [inch] | 1.575 |
| Outside diameter flange ring - d1 [inch] | 1.240 |
| Width - B [inch] | 0.827 |
| Inside - d φ [inch] | 0.669 |
| Width - C [inch] | 0.787 |
| Chamfer - r1,2 min. [inch] | 0.039 |
| Weight [lb] | 0.309 |
The NATR 17 PPA Support rollers (yoke-type track rollers) mainly consist of a thick-walled outer ring, a yoke-type inner ring with mounting holes, needle rollers or cylindrical rollers, and a sealing device. The outer surface of the outer ring can be designed as a cylindrical or spherical surface, and the inner ring adopts an integrated yoke structure, directly fixed to the equipment with bolts.
Support rollers (yoke-type track rollers) have high load-bearing capacity. The thick-walled outer ring and needle roller structure provide excellent radial load-bearing capacity and strong impact resistance. Installation is simple, requiring no bearing housing; direct bolt fixing is sufficient. Operation is smooth, and some models with a spherical outer ring can automatically adjust to track deviations. They have good sealing performance and are suitable for harsh working conditions such as dust and humidity.
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