61913 65X90X13 DALUO Deep Groove Ball Bearing Open
Single Row Deep Groove Ball Bearings
Core Advantages:
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Wide Application: Highly versatile and widely used in various mechanical systems.
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Low Friction: Operates with minimal friction, ensuring high efficiency.
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High-Speed Performance: Optimized design reduces noise and vibration, allowing for higher rotational speeds.
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Load Capacity: Capable of supporting both radial and bidirectional axial loads.
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Easy Installation: Simple to install with minimal alignment requirements.
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Minimal Maintenance: Requires significantly less maintenance compared to many other bearing types.
Key Features:
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Simple, universal, and robust design.
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Low friction.
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High-speed capability.
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Radial and bidirectional axial load capacity.
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Almost maintenance-free.
Modeling System
The bearing model consists of three parts: Prefix, Basic Model, and Suffix.
1. Prefix
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Prefix
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Description
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SS
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Stainless steel material, inch size.
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F
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Flanged outer ring.
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HOT
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High-temperature resistant bearing.
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2. Suffix - External Design (Seals, Locking Grooves, etc.)
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Suffix
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Description
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N
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Outer ring with a locking groove.
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NR
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Outer ring with a locking groove and a retaining ring.
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N1
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Outer ring with one positioning groove (recess) on one end face.
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-RS1, -2RS1
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Single or double-sided contact seals with nitrile rubber (NBR).
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-RS2, -2RS2
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Single or double-sided contact seals with fluororubber (FKM/Viton).
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-RSF, -2RSF
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Single or double-sided contact seals with nitrile rubber (NBR).
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-RSH, -2RSH
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Single or double-sided contact seals with nitrile rubber (NBR).
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-RSH2, -2RSH2
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Single or double-sided contact seals with fluororubber (FKM/Viton).
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-RSL, -2RSL
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Single or double-sided low-friction seals with nitrile rubber (NBR).
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-RZ, -2RZ
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Single or double-sided non-contact seals with nitrile rubber (NBR).
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-Z, -2Z
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Single or double-sided metal shields (dust covers).
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-ZNBR
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Single metal shield (dust cover), outer ring with locking groove, retaining ring on the same side as the shield.
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-ZNR
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Single metal shield (dust cover), outer ring with locking groove, retaining ring on the opposite side of the shield.
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-2ZNR
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Outer ring with locking groove and retaining ring, double-sided metal shields (dust covers).
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3. Suffix - Cage Design
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Suffix
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Description
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– (Default)
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Stamped steel cage, ball-guided.
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M
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Machined brass cage, ball-guided. Different designs and material grades are indicated by a number following M, e.g., M2.
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MA(S)
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Machined brass cage, outer ring-guided. "S" indicates lubrication grooves on the guiding ring face.
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MB(S)
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Machined brass cage, inner ring-guided. "S" indicates lubrication grooves on the guiding ring face.
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TN
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PA66 cage, ball-guided.
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TN9
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Glass fiber reinforced nylon 66 cage, ball-guided.
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TNH
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Glass fiber reinforced PEEK cage, ball-guided.
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4. Suffix - Material & Heat Treatment
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Suffix
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Description
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HQ1
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Balls made of silicon nitride (hybrid ceramic bearing).
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HQ2
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Balls made of zirconia (hybrid ceramic bearing).
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5. Suffix - Precision, Cleanliness, Preload, Quiet Operation
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Suffix
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Description
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P5
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Dimension and geometric tolerances (runout and directional tolerances) meet P5 grade.
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P6
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Dimension tolerances and geometric tolerances (runout tolerances) meet P6 grade.
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P52
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P5 + C2.
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P62
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P6 + C2.
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P63
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P6 + C3.
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CN
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Normal radial clearance group. Used only in combination with other letters to indicate narrowed or crossed clearance ranges.
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H
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Narrowed clearance range, corresponding to the upper half of the actual clearance range.
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L
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Narrowed clearance range, corresponding to the lower half of the actual clearance range.
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P
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Crossed clearance range, corresponding to the upper half of the actual clearance range plus the lower half of the next larger clearance range.
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C1
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Radial clearance less than C2.
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C2
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Radial clearance less than the normal group clearance.
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C3
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Radial clearance greater than the normal group clearance.
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C4
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Radial clearance greater than C3.
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C5
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Radial clearance greater than C4.
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CA
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Matched bearing set with small axial clearance.
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GA
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Matched bearing set with light preload.
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6. Suffix - Bearing Group, Matched Bearings
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Suffix
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Description
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DB
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Two bearings mounted back-to-back.
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DF
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Two bearings mounted face-to-face.
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DT
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Two bearings mounted in tandem.
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7. Suffix - Size Thermal Stability
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Suffix
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Description
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-150
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Bearing rings maintain dimensional stability at operating temperatures up to ≤ 150 °C (300 °F).
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-200
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Bearing rings maintain dimensional stability at operating temperatures up to ≤ 200 °C (390 °F).
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8. Suffix - Lubrication
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Suffix
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Description
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MT33
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Grease suffix.
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MT47
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Grease suffix.
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WT64
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Grease suffix.
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The digit following the grease suffix indicates the amount of grease relative to the free space in the bearing:
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0: 5 to 10%
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1: 10 to 15%
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2: 15 to 20%
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3: 20 to 30%
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4: 30 to 40%
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6: 35 to 45%
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7: 45 to 60%
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8: 60 to 80%
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9: 70 to 100%
