R163121420 Sliding Block for Rail Systems
Mass: 0.35kg
Preload class: C1
Accuracy class: N
Seal: SS
Size: 25
Lubrication: pre-lubricated
Material: Aluminum
A: 70mm
R163121420 Specification:
R163121420 is ball runner block made of aluminum.
For this item,
Mass: 0.35kg
A: 70mm
A2: 23mm
B: 86.2mm +0.5
E1: 57.80mm
E3: 40mm
E9: 11.50mm
H1: 29.90mm
A1: 35mm
K1: 12.45mm
K4: 5.50mm
N2: 7mm
N6: 15.2mm ±0.5
S2: M8
S9: M3x5
T: 60mm
A3: 23.50mm
B1: 57.80mm
E2: 57mm
E8: 38.30mm
H: 36mm
Dimension H2 with cover strip: 24.45mm
Real Photo:
Questions buyers ask when R163121420 is still under review
When is R163121420 worth comparing against nearby other ball & roller 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 R163121420 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 R163121420 is shortlisted?
A quick review of Other Ball & Roller 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 R163121420?
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 R163121420 Sliding Block for Rail Systems?
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 Other Ball & Roller 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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