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DAC 306037 Bearing Size, 2RS Seal & Verification Guide

DAC 306037 Bearing Size, 2RS Seal & Verification Guide

The HI-TEC DAC 306037 bearing is a double-row angular contact ball bearing built for vehicle wheel hub assemblies, measuring 30 mm bore, 60 mm outer diameter, and 37 mm width[1][2]. Matching automotive wheel bearings by standard series numbers requires checking exact dimensional specifications alongside internal sealing features before replacement.

Selecting the wrong wheel bearing lead to severe installation issues, premature failure, or grease leakage. Mechanics and workshop managers in Pakistan frequently face challenges when comparing old hub parts with replacement variants due to subtle profile differences and internal design alterations.

This guide breaks down the precise dimensions of DAC 306037 and DAC 255242 bearings, clarifies the protective role of the 2RS double rubber seal, and provides a clear procedure to confirm the exact part before ordering.

What are the exact dimensions and specs of DAC 306037 and DAC 255242 bearings?

The HI-TEC DAC 306037 bearing measures 30 mm bore, 60 mm outer diameter, and 37 mm width[1][2]. The DAC 255242 bearing measures 25 mm bore, 52 mm outer diameter, and 42 mm width. Both components belong to the double-row angular contact ball bearing family, designed to support combined radial load and heavy axial cornering forces in wheel hub assemblies[2][3].

Part Number Bore (Inner Diameter) Outer Diameter (OD) Width Structure Sealing Suffix
DAC 306037 30 mm[1] 60 mm[1] 37 mm[1] Angular Contact Ball 2RS (2x Rubber Seal)[3]
DAC 255242 25 mm 52 mm 42 mm Angular Contact Ball 2RS (2x Rubber Seal)

Understanding the seal designation is vital when ordering automotive wheel hub bearings. The 2RS suffix specifies double nitrile rubber seals on both sides of the angular contact ball bearing[3][4]. These synthetic rubber lips contact the inner ring to keep pre-applied factory grease contained while blocking water, fine dust, and road grime[2][3]. Using an unsealed or incorrectly shielded alternative allows lubricant migration, leading to rapid contamination, severe overheating, and premature hub failure.

Parts in this article

Part (bore x OD x width)VariantsPrice
DAC 306037
30 x 60 x 37 mm
Angular Contact Ball Bearings		DAC 306037 2RS (2x Rubber Seal) · In stockAsk today's price on WhatsApp
DAC 255242
25 x 52 x 42 mm
Angular Contact Ball Bearings		DAC 255242 2RS (2x Rubber Seal) · In stockAsk today's price on WhatsApp

How do you confirm the right wheel hub bearing replacement before ordering?

Bearings sharing the same series number or outer dimensions are not automatically interchangeable due to variations in internal design, internal clearance, and seal contact types[3][5]. Relying solely on outer envelope dimensions can lead to purchasing parts that fail to seat correctly inside the steering knuckle or spindle assembly.

To confirm the correct replacement wheel hub bearing in Pakistan before placing a purchase order, follow these structured steps:

  1. Verify the complete part stamping: Inspect the outer race of the worn bearing for exact alphanumerics, including suffixes like 2RS.
  2. Measure all three critical dimensions: Use a calibrated vernier caliper to confirm the bore diameter, outer diameter, and total width. A DAC 306037 requires a 30 mm bore, 60 mm OD, and 37 mm width[1][2].
  3. Examine the seal profile: Confirm whether the application requires double rubber seals (2RS) or alternative metallic shields.
  4. Consult technical support: Send clear photographs of the old part along with the vehicle make, model, and year directly to bearing specialists.

HI-TEC assists buyers across Pakistan with wheel hub bearing lookup, stock verification, and fast price quotes. For immediate technical assistance or direct procurement queries, reach out through the official HI-TEC contact page or connect on WhatsApp at +92-348-5563390.

Need a price? Ask HI-TEC BEARINGS on WhatsApp

Send the part number (DAC 306037, DAC 255242, or any other) to ask for today's price and availability.

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Frequently Asked Questions

What are the exact dimensions of a DAC 306037 wheel hub bearing?

The HI-TEC DAC 306037 wheel hub bearing measures 30 mm bore (inner diameter), 60 mm outer diameter, and 37 mm overall width. It is built as a double-row angular contact ball bearing.

What does 2RS stand for on a wheel hub bearing?

The 2RS suffix indicates that the bearing features two rubber seals, one on each side. These rubber lips retain internal factory grease and prevent dirt, debris, and moisture from entering the raceways.

Are bearings with the same size and series number always interchangeable?

No, bearings with identical series numbers or external measurements are not always interchangeable. Variations in seal designs, internal ball arrangements, load ratings, and width tolerances can prevent proper operation.

How can I confirm the right replacement wheel hub bearing in Pakistan?

Measure the bore, outer diameter, and width with a caliper, check the stamped part number, and confirm the seal configuration. You can contact HI-TEC directly on WhatsApp at +92-348-5563390 for verified part matching.

References

  1. [PDF] Technical sheet of DAC306037-2RS - Trade Bearings. https://en.tradebearings.com/data/pdf/c0/d5/DAC306037_2RS-171055.pdf (2026-01-15)
  2. DAC 306037 Bearing (30x60x37mm) | Automotive Wheel Hub Bearing. https://reliancetrading.pk/products/dac-306037/ (2025-11-15)
  3. DAC30600037 6-256706 Wheel Hub Bearing 30x60x37mm Lada .... https://www.vbabearing.com/dac30600037-6-256706-wheel-hub-bearing-30x60x37-lada-vaz (2026-03-19)
  4. Deep groove ball bearing dac306037-2rs-snr 30x60.03x37 mm. https://www.123bearing.com/bearing-housing/deep-groove-bearing/single-row/dac306037-2rs-snr (2026-10-13)
  5. DAC3060037/34 Wheel Bearings — OTT Bearing. https://www.ottautobearings.com/products/wheel-hub-bearings/dac3060037-34-wheel-bearing/ (2026-11-05)