55MM M2000 PILOTED FLANGE EXPANSION

The 55 mm M2000 Piloted Flange Expansion Bearing is Moline Bearing Company part 19131055: a mounted spherical roller bearing in the expansion position. It is fitted with a standard triple lip contact seal and a single collar, set screw locking insert, in a solid Class 30 cast iron housing with a standard painted finish.

It carries a genuine SKF or Timken spherical roller insert, which gives it high load capacity and the most misalignment tolerance of Moline's lines. M2000 housings are made in the USA, and the units are assembled here.

It ships assembled, adjusted, sealed and pre-lubricated with lithium complex grease, so it mounts straight from the box with no adjustment or cleaning.

Ratings

The dynamic load rating is 22,400 lbf and the static load rating is 26,500 lbf. Maximum speed is 2,150 rpm with the standard triple lip contact seal fitted, and the seal is rated for 0° to 250°F. The insert accepts up to 1.5° of angular misalignment. Set screws torque to 290 in-lbs, and the locking system holds 2,700 lbf of radial load before the insert slips on the shaft. The grease fitting is 1/8-27 NPT.

Mounting dimensions

• Pilot diameter: 5 in
• Pilot depth: 1 in
• Bolt circle diameter: 6 in
• Bolt hole centers: 4 1⁄4 in
• Bolt size: 1⁄2 in
• Height above mounting surface: 1 25⁄32 in
• Housing base diameter: 7 1⁄8 in
• Length through bore: 3 1⁄8 in
• Overall unit width: 3 1⁄4 in
• Shipping weight: 14.5 lb

The full dimension table and the datasheet drawing are above.

This configuration

• Expansion. This position lets the shaft move lengthwise as it heats and grows. Pair it with a non-expansion bearing at the other end. The matching non-expansion unit for this shaft size is 19231055.
• Standard Triple Lip Contact Seal. Three lips in series for demanding contamination exclusion, at the cost of more running friction and heat.
• Single Collar. One locking collar secures the insert to the shaft. Standard for unidirectional rotation and steady loads.
• Set Screw Locking. Set screws in the collar bite into the shaft. Simple and widely used; best where rotation is in one direction.

The same size is also built as 19131055G (garter seals), 19131055L (labyrinth seals), 19131055D (double collar), 19131055DG (double collar, garter seals), 19131055DL (double collar, labyrinth seals).

Replacement parts

The bearing insert is SLA11-055, and the housing on its own is Moline Bearing Company part 11321203.

Applications

M2000 units are the choice where a high-capacity, self-aligning bearing is needed and shaft expansion or misalignment is expected. Moline Bearing Company lists conveying, screening, air handling, paper and forestry, and food processing among the industries that run them. It is directly interchangeable with other collar-mounted spherical roller bearings in single-piece housings, including Moline's M3000 line.