Cylindrical Roller Bearings
NU309 Cylindrical Roller Bearing
45 × 100 × 25 mm
NU309 is a cylindrical roller bearing from the NU3 series with a 45 mm bore, a 100 mm outside diameter and a 25 mm width. It has a dynamic load rating of 71,100 N and a static load rating of 69,750 N and a speed rating of 7,560 rpm (oil lubrication), weighing about 0.877 kg. The radial cross-section (D − d) is 55 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
NU309 Specifications
| Bearing No. | NU309 |
|---|---|
| d (Bore) | 45 mm |
| D (Outer Dia.) | 100 mm |
| B (Width) | 25 mm |
| Dynamic Load | 71,100 N |
| Static Load | 69,750 N |
| Max. RPM | 7,560 |
| Weight | 0.877 kg |
| Series | NU3 Series Single Row Cylindrical Roller Bearings |
NU309 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the NU3 series page.
Neighbouring Sizes in the NU3 Series
NU309 — Frequently Asked Questions
What are the dimensions of the NU309 bearing?
The NU309 has a bore (d) of 45 mm, an outside diameter (D) of 100 mm and a width of 25 mm, so it is written 45 × 100 × 25 mm.
What is the load rating of the NU309?
Dynamic load rating 71,100 N and static load rating 69,750 N. The speed rating is 7,560 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the NU309 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include NU309 C3 (radial clearance larger than normal), NU309 M (machined brass cage), NU309 K (tapered bore (1:12)), NU309 P6 (higher running accuracy (ISO class 6)). Tell us the exact designation you need in a quote request.
Which other bearings have the same 45 mm bore as the NU309?
Other cylindrical roller bearings with a 45 mm bore include NU1009 (75 mm OD), N209 (85 mm OD), NF209 (85 mm OD), NJ209 (85 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the NU309 bearing across India?
Yes. Logass Trade Centre supplies the NU309 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and brand preference.
Can’t find your size?
We supply sizes, brands and special versions of cylindrical roller bearings that are not listed on this page. Type the exact size or designation you need and send it to us for a quote.
Need pricing on the NU309?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.