How do I know what size bearings for my boat trailer?
How do I know what size bearings for my boat trailer?
What Size are My Trailer Wheel Bearings?
- Support your trailer with a jack.
- Take off the wheel and tire.
- Remove the grease cap, cotter pin, and washer.
- Remove the spindle nut.
- Take out the hub itself.
- Look for the part numbers on the inner and outer bearings to determine the correct trailer wheel bearing sizes.
What size are my trailer bearings?
The easiest way to determine which bearings are used on your trailer axle is to take the hub off and check for the numbers stamped into the bearings. If the bearing numbers cannot be read, the next best solution is to find the bearings’ inner diameter.
How often should you repack boat trailer bearings?
How often should you repack your trailer bearings? The axle manufacturers recommend that you repack your trailer bearings once annually or every 12,000 km.
How do I know what size bearing I need?
You can measure the dimensions of a bearing by using a vernier caliper like the one below or measuring accurately with a ruler. All bearings will have an inner diameter (ID), an outside diameter (OD) and width (W). Bearings are sometimes referenced by these dimensions, in that order: ID x OD x W.
How do you determine bearing size?
How Bearings Are Sized. Bearings are measured by their inner diameter, outer diameter, and width; the size of a bearing is normally listed as such: ID x OD x W. These measurements are normally taken in millimeters, but can be converted to inches.
What happens when a trailer bearing fails?
A damaged wheel bearing does not only cause a vehicle to be shaky and noisy; it can also cost you more money by damaging other nearby parts, and even force your entire wheel to fly off when driving at high speed.
How much play should trailer bearings have?
Check wheels for side-to-side looseness – There should be a very slight amount of play in the wheel, typically 1/8-inch or less. If the wheels are loose or spin with a wobble, the bearings must be serviced or replaced.
How do I know if my trailer bearings need grease?
Keep your hand on the wheel and spin it. If you feel any motion that is not smooth, hear any noises, or if the wheel does not spin freely, the wheel bearing is defective or needs lubrication.
Can you over grease trailer bearings?
They keep grease packed into the hub. munchy wrote: More grease is never the right answer. Overgreasing can actually cause the rollers/balls to slide over the bearing surface rather than roll over them.
What do the numbers mean on a bearing?
The first digit indicates the width or height series (dimensions B, T or H). The second digit identifies the diameter series (dimension D). The last two digits of the basic designation identify the size code of the bearing bore. The size code multiplied by 5 gives the bore diameter (d) in mm.
