6909-2RS Deep Groove Ball Bearing For Industrial Drives & Harsh Environments | 45×68×12 mm
The 6909-2RS is a Versatile and Sealed Deep Groove Ball Bearing built for applications requiring reliable operation under demanding conditions. Equipped with double rubber seals (2RS) on both sides, this bearing offers superior protection against dust, moisture, and contaminants, effectively retaining lubricant and ensuring smooth, maintenance‑free performance over extended periods. With a 45mm bore, it is widely used in industrial machinery, electric motors, gearboxes, and agricultural equipment where environmental sealing and durability are essential.
6909 2RS Deep Groove Ball Bearing 45×68×12 mm | ISO 19 Series – Extra Light | Double Rubber Sealed
This deep groove ball bearing features a reliable sealing solution with integrated double rubber contact seals, making it suitable for contaminated or humid operating environments. The 6909‑2RS supports high radial loads and can accommodate moderate axial loads in both directions. Its balanced design and effective sealing make it an excellent choice for industrial drives, conveyors, fans, and outdoor equipment where protection from external elements is critical.

Designed for a broad range of industrial and mechanical applications where sealing and load capacity are equally important:
Rubber contact seals on both sides provide an effective barrier against dust, dirt, and moisture ingress. This sealed design retains grease longer, reduces contamination risk, and extends bearing life in harsh or wet environments.
Manufactured to extra‑light series dimensions (45×68×12 mm), this bearing delivers high radial load capacity and handles moderate axial loads from either direction. Its sturdy design ensures reliable performance in continuous‑duty applications.
The 2RS sealing effectively retains lubricant, significantly extending relubrication intervals and reducing maintenance needs. This makes the bearing ideal for applications where frequent servicing is impractical.
| Bearing Type | Single Row Deep Groove Ball Bearing |
| ISO Dimension Series | 69 Series – Extra Light |
| Basic Designation | 6909 |
| Suffix | 2RS (Double Rubber Seals) |
| Bore Diameter (d) | 45 mm |
| Outer Diameter (D) | 68 mm |
| Width (B) | 12 mm |
| Material (Races & Balls) | Chrome Steel (GCr15 / SAE 52100) |
| Precision Class | Standard / P5 Grade Available |
| Cage Material | Steel Stamped |
| Dynamic Load Rating (Cʳ) | 22.5 kN |
| Static Load Rating (C₀ʳ) | 14.3 kN |
| Limiting Speed (Grease) | 6,300 r/min |
| Limiting Speed (Oil) | 8,500 r/min |
| Weight (approx.) | 180 g |
Compatible cross‑references include:
The 6909-2RS comes standard with double lip‑type rubber seals, offering excellent sealing performance for wet or dusty conditions. For applications requiring less friction or higher speed, the shielded variant (6909‑ZZ) is also available.
"Ideal for industrial and outdoor applications where moisture, dust, or debris are present and reliable sealed performance is required."
The 698-ZZ is a Durable Miniature Deep Groove Ball Bearing designed for applications that require a robust yet compact bearing solution with built-in contamination resistance. Featuring double steel shields (ZZ), it provides effective two-side sealing against dust and airborne particles while ensuring smooth, low-friction performance. With an 8 mm bore, 19 mm outer diameter, and a 6 mm width, this bearing is well-suited for small industrial motors, geared mechanisms, and electromechanical devices where reliable operation in varied environments is essential.
Details
The 699-2RS is a Double Rubber-Sealed Miniature Deep Groove Ball Bearing designed for compact, high-reliability applications where protection against moisture and fine contaminants is essential. With two rubber contact seals (2RS) on both sides, this bearing provides superior sealing performance, retaining lubrication and preventing ingress of dust, dirt, and fluids. Featuring a 9mm bore and an ultra-light cross-section, it is ideal for sensitive precision instruments, small motors, and devices operating in challenging environments where space is limited and cleanliness is critical.
Details
The 6901-2RS is a Double Rubber-Sealed Ultra-Thin Section Deep Groove Ball Bearing designed for space-sensitive applications requiring reliable sealing and low-profile design. Equipped with two rubber contact seals (2RS), it effectively shields against dust, moisture, and contaminants while retaining grease for extended service. Featuring a 12 mm bore and an exceptionally slim 6 mm width, this bearing is ideal for small motors, precision instruments, and compact mechanisms where axial space is limited.
Details
The 6902-ZZ is a Double Metal-Shielded Ultra-Thin Series Deep Groove Ball Bearing engineered for applications demanding a slim profile, high rotational speeds, and effective dust protection. Featuring two non-contact steel shields (ZZ) on both sides, it guards against dry contaminants while minimizing friction and heat generation. With a 15 mm bore and an exceptionally low 7 mm cross-section, this bearing is perfectly suited for small motors, precision spindles, and space-constrained devices where reliable high-speed performance is essential.
Details
The 6903-2RS is a Double Rubber-Sealed Ultra-Thin Series Deep Groove Ball Bearing designed for applications where space constraints and environmental protection are equally critical. Equipped with two effective rubber contact seals (2RS), it provides reliable defense against dust, moisture, and fine contaminants while retaining lubrication. Featuring a 17 mm bore and a slim 7 mm width, this bearing is an excellent choice for compact motors, precision instruments, and small mechanisms operating in potentially contaminated or humid conditions.
Details
The 6904-2RS is a Double Rubber-Sealed Ultra-Thin Deep Groove Ball Bearing engineered for applications requiring a slender profile along with reliable contamination protection. Fitted with two rubber contact seals (2RS) on both sides, it effectively shields against dust, moisture, and fine particles while maintaining internal lubrication. With a 20 mm bore and a slim 9 mm width, this bearing offers an ideal solution for compact motors, precision equipment, and small devices where space savings and environmental sealing are essential.
Details
The 6905-2RS is a Double Rubber-Sealed Ultra-Thin Series Deep Groove Ball Bearing designed to deliver reliable performance in space-constrained applications that also require environmental protection. Fitted with two effective rubber contact seals (2RS), it guards against dust, moisture, and contaminants while retaining grease for extended service life. With a 25 mm bore and a slender 9 mm width, this bearing is an excellent choice for compact motors, gearboxes, actuators, and other light industrial or automotive mechanisms operating in potentially harsh conditions.
Details
The 6908-2RS is a Double Rubber-Sealed Extra-Light Series Deep Groove Ball Bearing engineered for applications demanding minimal cross-section with reliable contamination protection. Featuring two rubber contact seals (2RS) on both sides, it effectively shields against dust, moisture, and fine particles while preserving internal lubrication. With a 40 mm bore and a slim 12 mm width, this bearing is an excellent choice for compact machinery, precision instruments, and light-duty drive systems where sealing integrity and space efficiency are equally important .
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