RLS 44 Bearing LJ5.1/2J Inch Radial Ball Bearing 5.5″ Bore
Inner Diameter: 139.700mm/ 5.50 inch
Outer Diameter: 241.300mm/ 9.50 inch
Width: 34.925mm/ 1.375 inch
Mass: 6.85kg/ 15.102lbs
Material: chrome steel
Seal: open without seal
Operating Temperature: -30°C to 120 °C
RLS 44 Bearing Specification:
RLS 44 bearing is an inch size deep groove ball bearing.
Inner Diameter: 139.700mm/ 5.50 inch
Outer Diameter: 241.300mm/ 9.50 inch
Width: 34.925mm/ 1.375 inch
Mass: 6.85kg/ 15.102lbs
Material: chrome steel
Seal: open without seal
Precision: standard precision ABEC1
Operating Temperature: -30°C to 120 °C
Radial Internal Play: standard CN/C0 play
Also Known As: RLS44, LJ5.1/2, LJ 5.1/2J, LJ 5 1/2, LS23.1/2, LS 23 1/2
LJ 5 1/2 Bearing Features:
1. The RLS44 bearing is an inch-size deep groove ball bearing, designed for smooth and efficient rotation. Its versatile design makes it suitable for a wide range of industrial and mechanical applications.
2. This bearing features a bore diameter of 5.5 inches (approximately 139.7 mm), making it ideal for heavy-duty shafts and large machinery where robust support is required.
3. The single row deep groove configuration allows for excellent load distribution and high-speed operation. The deep raceway grooves enable the bearing to handle both radial loads and moderate axial (thrust) loads in both directions.
4. Made from high-grade chrome steel (bearing steel), the RLS 44 bearing offers superior strength, durability, and resistance to wear and fatigue, ensuring a long service life even under demanding conditions.
5. Engineered to support substantial radial loads and moderate axial loads, making it suitable for applications involving both types of forces. Its robust construction ensures reliable performance under heavy operational stresses.
RLS Bearing Cross Reference Chart:
| RLS 4 | LS 5 | LJ 1/2 | RLS 4 |
| RLS 5 | LS 7 | LJ 5/8 | RLS 5 |
| RLS 6 | LS 8 | LJ 3/4 | RLS 6 |
| RLS 7 | LS 9 | LJ 7/8 | RLS 7 |
| RLS 8 | LS 10 | LJ 1 E | RLS 8 |
| RLS 9 | LS 11 | LJ 1 1/8 | RLS 9 |
| RLS 10 | LS 12 | LJ 1 1/4 | RLS 10 |
| RLS 11 | LS 12 1/2 | LJ 1 3/8 | RLS 11 |
| RLS 12 | LS 13 | LJ 1 1/2 | RLS 12 |
| RLS 13 | LS 13 1/2 | LJ 1 5/8 | RLS 13 |
| RLS 14 | LS 14 | LJ 1 3/4 | RLS 14 |
| RLS 15 | LS 14 1/2 | LJ 1 7/8 | RLS 15 |
| RLS 16 | LS 15 | LJ 2 E | RLS 16 |
| RLS 18 | LS 16 | LJ 2 1/4 | RLS 18 |
| RLS 20 | LS 17 | LJ 2 1/2 | RLS 20 |
| RLS 22 | LS 18 | LJ 2 3/4 | RLS 22 |
| RLS 24 | LS 19 | LJ 3 E | RLS 24 |
| RLS 26 | LS 19 1/2 | LJ 3 1/4 | RLS 26 |
| RLS 28 | LS 20 | LJ 3 1/2 | RLS 28 |
| RLS 30 | LS 20 1/2 | LJ 3 3/4 | RLS 30 |
| RLS 32 | LS 21 | LJ 4 E | RLS 32 |
| RLS 34 | LS 21 1/2 | LJ 4 1/4 | RLS 34 |
| RLS 36 | LS 22 | LJ 4 1/2 | RLS 36 |
| RLS 38 | LS 22 1/2 | LJ 4 3/4 | RLS 38 |
| RLS 40 | LS 23 | LJ 5 E | RLS 40 |
| RLS 44 | LS 23 1/2 | LJ 5 1/2 | RLS 44 |
| RLS 48 | LS 24 | LJ 6 E | RLS 48 |
| RLS 52 | LS 24 1/2 | LJ 6 1/2 | RLS 52 |
Questions that usually come up before ordering 1/2J and 8243
When is 1/2J and 8243 worth comparing against nearby deep groove ball bearings options?
Comparison helps when dimensional fit is only part of the decision and load direction, sealing, clearance, speed, temperature, or repeat-order stability still need to be confirmed. Reviewing one or two nearby options early usually reduces sourcing mistakes later.
What details usually matter before approving 1/2J and 8243 for repeat supply?
Buyers normally confirm the part reference, main dimensions, application, speed range, operating environment, sealing needs, and any packaging or marking requirements. That gives the supplier a cleaner basis for confirming availability and suitable alternatives.
Which next step usually helps after 1/2J and 8243 is shortlisted?
A quick review of Deep Groove Ball Bearings, one more commercial destination, and one practical guide usually saves time. That combination helps separate simple replacement orders from jobs that still need fit or application review.
Why keep a supporting guide linked beside 1/2J and 8243?
Because it makes later decisions faster. When sizing notes, application cues, and nearby options stay close to the product, engineering, purchasing, and maintenance teams can revisit the same logic without starting the review from zero.
Shipping Method:
1. Sea shipping for mass cargos (GW > 500KGS)
2. Air shipping (GW between 100KGS – 500 KGS)
3. Express, such as DHL, TNT, Fedex, UPS for small cargos ( GW < 100KGS)
4. If you have shipping agent in China, we can send goods to your shipping agent's warehouse
Payment Terms:
We accept T/T, W/U, PAYPAL, L/C etc
Buyer FAQ
Questions buyers ask before choosing the next bearing option
What should I confirm before ordering RLS 44 Bearing LJ5.1/2J Inch Radial Ball Bearing 5.5″ Bore?
Confirm the bearing number, bore size, outside diameter, width, seal or shield type, cage material, clearance, precision level, quantity, and application. These details help prevent a size match from becoming a performance mismatch.
Can this bearing be matched for replacement or repeat supply?
Yes. Replacement and repeat orders are easier when the original marking, measured dimensions, photos, application, and quantity are available. If the marking is unclear, the team can start from the size and working condition.
Which product family does this bearing belong to?
This item is handled within the Deep Groove Ball Bearings family. Comparing the family page can help buyers review similar sizes, seal options, load direction, and related bearing choices before requesting a quote.
What affects price and lead time for this bearing?
Price and lead time can change with quantity, stock availability, precision grade, clearance, material, cage, seal or shield type, lubrication, packaging, and whether the order needs standard matching or custom production.
How is this bearing checked before delivery?
Inspection can include material review, dimensional measurement, noise and vibration checks, surface and crack checks, visual review, and packaging inspection according to the confirmed order requirements.
Need help checking fit, price, or lead time? Request a bearing quote
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