Self-Aligning Ball Bearings
1203 Self-Aligning Ball Bearing
17 × 40 × 12 mm
1203 is a self-aligning ball bearing from the 12 series with a 17 mm bore, a 40 mm outside diameter and a 12 mm width. It has a dynamic load rating of 7,110 N and a static load rating of 1,809 N and a speed rating of 15,300 rpm (oil lubrication), weighing about 0.072 kg. The radial cross-section (D − d) is 23 mm.
Brands: NTN, FAG, SKF, NBC, DTC, SLS
1203 Specifications
| Bearing No. | 1203 |
|---|---|
| d (Bore) | 17 mm |
| D (Outer Dia.) | 40 mm |
| B (Width) | 12 mm |
| Dynamic Load | 7,110 N |
| Static Load | 1,809 N |
| Max. RPM | 15,300 |
| Weight | 0.072 kg |
| Series | 12 Series Double Row Self-Aligning Ball Bearings |
1203 Variants & Designations
Typical designations for this size, subject to availability. Full suffix meanings are listed on the 12 series page.
1203 K
tapered bore (1:12)
1203 C3
radial clearance larger than normal
1203-2RS
rubber seals on both sides
Neighbouring Sizes in the 12 Series
1203 — Frequently Asked Questions
What are the dimensions of the 1203 bearing?
The 1203 has a bore (d) of 17 mm, an outside diameter (D) of 40 mm and a width of 12 mm, so it is written 17 × 40 × 12 mm.
What is the load rating of the 1203?
Dynamic load rating 7,110 N and static load rating 1,809 N. The speed rating is 15,300 rpm with oil lubrication; for grease lubrication use about 75% of that value.
Is the 1203 available with seals, special clearance or other options?
Yes, subject to availability. Typical designations include 1203 K (tapered bore (1:12)), 1203 C3 (radial clearance larger than normal), 1203-2RS (rubber seals on both sides). Tell us the exact designation you need in a quote request.
Which other bearings have the same 17 mm bore as the 1203?
Other self-aligning ball bearings with a 17 mm bore include 2203 (40 mm OD), 1303 (47 mm OD), 2303 (47 mm OD). A larger outside diameter generally means a higher load rating.
Do you supply the 1203 bearing across India?
Yes. Logass Trade Centre supplies the 1203 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 1203?
Share your quantity and preferred brand — our technical team will confirm availability and pricing within one business day.