RLS34 Bearing LS 21 1/2 Imperial Radial Deep Groove Ball Bearing LJ4.1/4J
Inner (d): 107.95mm/ 4.25 inch
Outer (D): 190.50mm/ 7.50 inch
Width (B): 31.75mm/ 1.25inch
Mass: 4.10kg/ 9.039lbs
Seal: without
Number of Row: single row
Replacements: RLS 34, LS21.1/2,LS 21.1/2, LS 21 1/2, LJ4.1/4J, LJ 4.1/4J, LJ 4.1/4, LJ4.1/4JCNS, LJ 4.1/4JCNS
RLS34 Bearing Specification:
RLS34 bearing is an imperial radial deep groove ball bearing designed for various applications.
Inner (d): 107.95mm/ 4.25 inch
Outer (D): 190.50mm/ 7.50 inch
Width (B): 31.75mm/ 1.25inch
Mass: 4.10kg/ 9.039lbs
Seal: without
Number of Row: single row
Relubrication Feature: without
Certificate: ISO9001: 2015
Warranty: 1 year
Precision: ABEC1, P0
Radial Internal Play: standard CN
Replacements: RLS 34, LS21.1/2,LS 21.1/2, LS 21 1/2, LJ4.1/4J, LJ 4.1/4J, LJ 4.1/4, LJ4.1/4JCNS, LJ 4.1/4JCNS
Key Features:
1. Versatile Design:
RLS 34 bearings are highly adaptable and suitable for a wide range of applications, including industrial machinery, automotive systems, and household appliances. Their simple yet robust design makes them a reliable choice across various industries.
2. Low Friction:
Bearing LS21.1/2 is engineered to minimize friction during operation, these bearings reduce energy loss and heat generation, improving efficiency and performance. This makes them ideal for applications where smooth and consistent motion is essential.
3. High-Speed Capability:
LJ4.1/4J bearing is designed to handle high rotational speeds, these bearings enable faster and more efficient operation in demanding applications, such as electric motors, turbines, and precision equipment.
4. Low Noise and Vibration:
Optimized for quiet and stable performance, these bearings reduce operational noise and vibration, making them suitable for environments where sound levels are critical, such as medical devices or residential applications.
5. Minimal Maintenance:
With a durable construction and reliable performance, these bearings require less frequent maintenance, lowering operational costs and ensuring long-term functionality.
Our Selection of Imperial Deep Groove Ball Bearings:
| Bearing Model Number | Dimension (Inch) | Mass | |||
| d | D | B | KG | ||
| LJ3 3/8 | RLS27 | 3 3/8 | 7 1/2 | 1 9/16 | 4.9 |
| LJ3 1/2 | RLS28 | 3 1/2 | 6 1/2 | 1 1/8 | 2.33 |
| LJ3 3/4 | RLS30 | 3 3/4 | 6 3/4 | 1 1/8 | 2.47 |
| LJ4E | RLS32 | 4 | 7 1/4 | 1 1/4 | 3.18 |
| LJ4 1/4 | RLS34 | 4 1/4 | 7 1/2 | 1 1/4 | 3.86 |
| LJ4 1/2 | RLS36 | 4 1/2 | 8 | 15/16 | 4.67 |
| LJ4 3/4 | RLS38 | 4 3/4 | 8 1/4 | 15/16 | 4.9 |
| LJ5E | RLS40 | 5 | 9 | 1 3/8 | 6.35 |
| LJ5 1/2 | RLS44 | 5 1/2 | 9 1/2 | 1 3/8 | 6.85 |
| LJ6E | RLS48 | 6 | 10 1/2 | 1 9/16 | 9.48 |
| LJ6 1/2 | RLS52 | 6 1/2 | 11 | 1 9/16 | 10.2 |
| LJ7E | RLS56 | 7 | 12 | 1 3/4 | 14.1 |
| LJ7 1/2 | RLS60 | 7 1/2 | 12 1/2 | 1 3/4 | 14.5 |
Questions that help when RLS34 and 1/4J is on the shortlist
When is RLS34 and 1/4J 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 RLS34 and 1/4J 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 RLS34 and 1/4J 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 RLS34 and 1/4J?
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 RLS34 Bearing LS 21 1/2 Imperial Radial Deep Groove Ball Bearing LJ4.1/4J?
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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