Cylindrical Roller Bearings
NF309 Cylindrical Roller Bearing
45 × 100 × 25 mm
NF309 is a cylindrical roller bearing from the NF3 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 0.857 kg. The radial cross-section (D − d) is 55 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
NF309 Specifications
| Bearing No. | NF309 |
|---|---|
| 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 | 0.857 kg |
| Series | NF3 Series Single Row Cylindrical Roller Bearings |
NF309 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the NF3 series page.
NF309 C3
radial clearance larger than normal
NF309 M
machined brass cage
NF309 K
tapered bore (1:12)
NF309 P6
higher running accuracy (ISO class 6)
Neighbouring Sizes in the NF3 Series
NF309 — Frequently Asked Questions
What are the dimensions of the NF309 bearing?
The NF309 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 NF309?
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 NF309 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include NF309 C3 (radial clearance larger than normal), NF309 M (machined brass cage), NF309 K (tapered bore (1:12)), NF309 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 NF309?
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 NF309 bearing across India?
Yes. Logass Trade Centre supplies the NF309 Pan India with technical support, from single pieces to bulk orders. Use the quote button to share your quantity and brand preference.
Need pricing on the NF309?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.