RNA69/32 Double Row Needle Roller Bearing 40x52x36mm Without Inner Ring High Radial Load For Hydraulic Motors Reducers
Price:
USD 0.8-2
MOQ:
1 PCS
Delivery Time:
3-5 working days
Brand:
GQZ /OEM
Product Description
RNA69/32 Double Row Needle Roller Bearing 40x52x36mm Without Inner Ring High Radial Load For Hydraulic Motors Reducers
Product Overview
- RNA69/32 is an open double-row solid outer ring needle roller bearing without inner ring, standard dimension 40×52×36 mm. Precisely manufactured from premium GCr15 bearing steel, it adopts stamped steel cage to stably retain two rows of needle rollers inside the integral flanged outer ring.Without independent inner ring, the quenched and precision-ground shaft surface directly acts as the rolling raceway, which greatly saves radial installation space and allows larger-diameter shaft design to improve shaft structural strength. It boasts ultra-high radial load capacity and excellent rotational rigidity. The open structure facilitates regular grease replenishment and maintenance, widely used for compact heavy-duty transmission devices across various industrial fields.
*Send inquiry to get latest factory price and technical datasheet for RNA69/32 needle roller bearing.
Key Specifications
| Parameter Item | Specification |
|---|---|
| Model | RNA69/32 |
| Bearing Type | Double Row Machined Ring Needle Roller Bearing Without Inner Ring |
| Raceway Diameter (Fw) | 40 mm |
| Outer Diameter (D) | 52 mm |
| Overall Width (C) | 36 mm |
| Min Fillet Radius (r min) | 0.6 mm |
| Basic Dynamic Load Rating (Cr) | 55 kN |
| Basic Static Load Rating (C0r) | 90 kN |
| Limiting Speed (Grease Lubrication) | 6700 rpm |
| Reference Speed | 6500 rpm |
| Cage | Stamped Steel Cage |
| Structure | Double Row Needle Rollers, Solid Flanged Outer Ring |
| Seal Type | Open Type, No Seals |
| Material | GCr15 Bearing Steel |
| Approx Net Weight | 0.167 kg |
| Operating Temperature | -30℃ ~ +120℃ |
Main Features
- No inner ring design: Compact radial layout, allows thicker shaft to enhance shaft strength.
- Double row needle roller arrangement: Extremely high radial load bearing capacity and excellent structural rigidity.
- Integral solid outer ring with double side ribs: Limits needle roller displacement, bears slight bidirectional axial force.
- Open structure: Convenient for lubricant filling and daily maintenance.
- Made of GCr15 steel: High hardness, outstanding wear resistance and long service life.
- Low section height: Ideal choice for equipment with limited radial installation space.
Typical Applications
- Hydraulic motors, hydraulic pumps and hydraulic system components
- Gear reducers, gearboxes and transmission assemblies
- Construction machinery, agricultural machinery rotating parts
- Injection molding machine auxiliary moving components
- Heavy textile machinery, packaging equipment
- Automated production line heavy-duty rotary mechanisms
*Contact our technical team to confirm compatibility and bearing assembly suggestions.
FAQ
Q1: What are the exact dimensions of RNA69/32 bearing?
A: Raceway bore Fw 40mm, outer diameter 52mm, total width 36mm.
Q2: What is the difference between RNA69/32 and NA69/32?
A: RNA69/32 has no inner ring and requires hardened ground shaft as rolling raceway; NA69/32 is equipped with complete inner ring for direct installation.
Q3: What surface requirements are needed for the matched shaft?
A: The shaft rolling surface must be quenched to HRC 58~62 and precision ground to avoid premature abrasion.
Q4: What is the grease lubrication limiting speed?
A: Grease lubrication limiting speed: 6700 rpm.
Q5: Can this bearing withstand large axial loads?
A: It is mainly designed for radial loads, only applicable for tiny axial displacement and slight axial loads.
*Place bulk orders for MR series inch needle bearings, enjoy sufficient stock and fast delivery.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Wuxi Guangqiang Bearing Trade Co.,Ltd
Location
No. 650 North Xingyuan Road, Beitang District, Wuxi, China.
Contact Person
Mike Zhang