Large Cylindrical Roller Bearings by Size: NJ 2228, NUP 2215 & 2209
When sourcing large cylindrical roller bearings by size, procurement officers and workshop engineers in Indonesian industrial hubs - like Cikarang, Surabaya, and Medan - rely on exact boundary dimensions to ensure proper shaft seating. Standardized industry designations dictate the inner diameter (bore), outer diameter (OD), and width across dimensional series. The NJ 2228 bearing measures 140 mm bore, 250 mm outer diameter, and 68 mm width, NUP 2215 measures 75x130x31 mm, and NUP 2209 measures 45x85x23 mm.
However, dimensional matching alone is insufficient for machine reliability. Selecting between single-row cylindrical roller bearing series requires identifying specific flange arrangements and axial thrust capabilities. Ordering the incorrect prefix or suffix designation leads to binding, unseated housings, and sudden machine downtime.
This guide breaks down the precise dimensions of NJ 2228, NUP 2215, and NUP 2209 bearings while clarifying why series designations dictate mechanical function beyond basic millimetric measurements.
What are the exact dimensions for NJ 2228, NUP 2215, and NUP 2209 bearings?
The exact dimensions for NJ 2228 are 140 mm bore, 250 mm outer diameter, and 68 mm width; NUP 2215 measures 75x130x31 mm, and NUP 2209 measures 45x85x23 mm. These three models fall within the 2200 and 22000 metric dimension series, designed to handle high radial loads in compact industrial machine housings across manufacturing facilities in Jakarta and Bandung.
Matching the bore, outer diameter, and width ensures the roller assembly seats correctly on the shaft journal and fits inside the pillow block or end-cover housing. Standardized boundary dimensions follow international ISO sizing codes, allowing technicians to verify physical envelope requirements during preventive maintenance.
| Part Number | Bore (Inner Diameter) | Outer Diameter (OD) | Width | Series Classification |
|---|---|---|---|---|
| NJ 2228 | 140 mm | 250 mm | 68 mm | NJ 2200 Series |
| NUP 2215 | 75 mm | 130 mm | 31 mm | NUP 2200 Series |
| NUP 2209 | 45 mm | 85 mm | 23 mm | NUP 2200 Series |
While NJ 2228 serves heavy-duty industrial plant applications requiring a large 140 mm shaft bore, NUP 2215 and NUP 2209 support medium-to-light industrial gearboxes, electric motors, and drive shafts. Standardizing replacement orders around verified part numbers prevents costly shaft fitting mistakes.
Parts in this article
| Part (bore x OD x width) | Variants | Price |
|---|---|---|
| NJ 2228 140 x 250 x 68 mm NJ 2200 Series | NJ 2228 | Ask today's price on WhatsApp |
| NUP 2215 75 x 130 x 31 mm NUP 2200 Series | NUP 2215 | Ask today's price on WhatsApp |
| 2209 45 x 85 x 23 mm | 2209 2RS (2x Rubber Seal) 2209 K 2RS (2x Rubber Seal) | Ask today's price on WhatsApp |
| NUP 2209 45 x 85 x 23 mm NUP 2200 Series | NUP 2209 | Ask today's price on WhatsApp |
Are NJ and NUP series cylindrical roller bearings interchangeable?
No, NJ and NUP series cylindrical roller bearings are not interchangeable because they feature distinct flange configurations that determine axial guidance and shaft expansion limits. Bearings sharing a series number or identical dimensions are not automatically interchangeable because variants like NJ and NUP feature different flange configurations and axial guidance[1][2].
NJ series cylindrical roller bearings feature two integral outer flanges and one inner flange, whereas NUP series bearings include a fixed flange and loose rib[1][2]. This distinction dictates how the bearing handles shaft movement inside industrial equipment:
- NJ Series (Semi-Locating): Designed with two rigid outer-ring ribs and one rigid inner-ring rib[1][2]. It supports high radial forces and provides axial shaft guidance in a single direction, allowing limited thermal axial displacement in the opposing direction[1][2].
- NUP Series (Locating): Designed with two rigid outer-ring ribs, one rigid inner-ring rib, and one loose flange ring (loose rib washer)[1][2]. The loose rib completes two-point inner ring axial support, anchoring the shaft in both directions and preventing relative axial displacement[1][3].
Substituting an NJ bearing for an NUP bearing in a fixed locating position leaves the shaft unsecured against reversing thrust loads. Conversely, installing an NUP bearing where thermal shaft expansion requires single-direction movement leads to thermal preloading and premature spalling[2]. HI-TEC confirms verified part numbers and assists with pricing and availability for industrial cylindrical roller bearings via WhatsApp at +62 823-1004-6527.
Need a price? Ask HI-TEC Asia on WhatsApp Send the part number (NJ 2228, NUP 2215, 2209, or any other) to ask for today's price and availability. Open WhatsApp |
Frequently Asked Questions
What are the exact dimensions of NJ 2228, NUP 2215, and NUP 2209 bearings?
NJ 2228 measures 140 mm bore, 250 mm outer diameter, and 68 mm width. NUP 2215 measures 75 mm bore, 130 mm outer diameter, and 31 mm width. NUP 2209 measures 45 mm bore, 85 mm outer diameter, and 23 mm width.
Are NJ and NUP series cylindrical roller bearings interchangeable?
No, NJ and NUP bearings are not interchangeable. While their external dimensions match within the same size series, NJ bearings locate shafts axially in one direction, whereas NUP bearings use a loose rib to locate shafts in both directions.
What is the difference between NJ series and NUP series bearings?
The primary difference lies in inner ring flange construction. NJ bearings have a single integral inner flange for semi-locating arrangements, while NUP bearings feature an integral flange plus a loose flange ring to fix the bearing axially in both directions.
How can I inquire about HI-TEC bearing stock and pricing in Indonesia?
You can verify exact part specifications and receive rapid pricing and delivery confirmation directly from our technical sales specialists via WhatsApp at +62 823-1004-6527.
References
- Designs and variants - SKF. https://www.skf.com/group/products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/single-row-cylindrical-roller-bearings/designs-and-variants (2026-10-25)
- Single row cylindrical roller bearings with cage. https://medias.schaeffler.de/en/single-row-cylindrical-roller-bearings-with-cage (2026-10-20)
- Cylindrical Roller Bearings. https://www.nsk.com/am-en/products/bearings/roller-bearings/cylindrical-roller-bearings/ (2024-07-02)