Basic Info.
| Part no. | 5M6126 | Material | steel |
| Type | Needle Bearing | Part Type | Engineering machinery parts |
| Compatibility | Caterpillar | Transport Package | Wooden box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
- Date First Listed:2025/11/24
- Manufacturer:Diron Parts
Product Description
- Part Type:Needle Bearing
- Description:Needle Bearing 5M6126 Suitable for Caterpillar


The 5M-6126 is a high-precision aftermarket drawn-cup needle roller bearing manufactured as a direct. This compact, high-load-capacity bearing is widely used in planetary gear sets, transmission shafts, and torque converter assemblies across numerous classic Caterpillar engines and powertrain components, delivering smooth rotation and long service life under high radial loads and limited space.
Key Features & Benefits
- Full-complement drawn-cup needle roller design for maximum load capacity in minimal space
- Premium-grade chrome steel needles and hardened steel outer race for superior strength and wear resistance
- Precision ground to exact OEM tolerances – true drop-in replacement, no modifications required
- Excellent resistance to fatigue and shock loading
- Lightly lubricated at assembly for immediate use and extended shelf life
- Cost-effective alternative that meets or exceeds genuine Caterpillar performance standards
Common Applications (Caterpillar® Compatibility)
- Planetary gear carriers and sun gear shafts in: – Torque converters (many 3306, 3406, D330, D333, D398, D399 powered machines) – Transmission planetary groups (D6D, D7G, 966C, 980B/C, 824C, etc.)
- Frequently found in: – Wheel Loaders: 966C, 966D, 980B, 980C – Track-Type Tractors: D6D, D7G, D8K – Scrapers: 627B, 637D – Older marine and industrial powertrain applications
Technical Specifications
- Part Number: 5M-6126 (aftermarket equivalent to Caterpillar® 5M6126)
- Type: Drawn-cup full-complement needle roller bearing
- Inside Diameter (ID): 38.100 mm (1.500 in)
- Outside Diameter (OD): 47.625 mm (1.875 in)
- Width: 25.400 mm (1.000 in)
- Dynamic Load Rating: ~28 kN
- Static Load Rating: ~55 kN
- Weight: Approx. 0.09 kg (0.20 lb)
- Quantity per machine: Multiple (typically 3–12 depending on planetary set)
Important Note:
- We only provide replacement products intended for aftermarket use in the Caterpillar machinery listed above. The brand name Caterpillar is used solely as reference information to indicate compatibility and does not imply that our products are OEM.
- While this description provides general information, specific details such as size, weight and exact material may vary by manufacturer and specific application. To obtain the most accurate and up-to-date information, it is recommended to consult a qualified parts supplier such as DIRON PARTS.
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: FOB
Q4. How about your delivery time?
A: Generally, it will take 20 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q8. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from
ABOUT DIRON
- Factory OF DIRON
Diron Parts Group Have Its Own Factory Ensure That We Offer Better Price For Customers. Besides, Diron Corporate With Some Reliable Principal Manufacturers, So Diron Also Supply Customer Other Quality Spare Parts.








- Team OF DIRON
With 18 years of manufacturing and exporting experience, Diron has a team of knowledgeable engineers, inspectors and technical workers, sales staff, after-sales personnel.


- Products OF DIRON
As a distributor, we supply parts covers for :Complete engines, Long block, Short block, Engine spare parts, Electricla products, Hydraulic products, Transmission products, Undercarridge products.Among them, Cylinder head, Cylinder block, Spacer-plate, Bushing & Pin are our best-selling products.




























