50MM M2000 PILOTED FLANGE EXPANSION WITH LABYRINTH SEALS
The 50 mm M2000 Piloted Flange Expansion Bearing with Labyrinth Seals is Moline Bearing Company part 19131050L: a mounted spherical roller bearing in the expansion position. It is fitted with a balanced steel and Teflon labyrinth 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 19,000 lbf and the static load rating is 22,500 lbf. Maximum speed is 4,250 rpm with the balanced steel and Teflon labyrinth seal fitted, and the seal is rated for 0° to 350°F. The insert accepts up to 1.5° of angular misalignment. Set screws torque to 290 in-lbs, and the locking system holds 2,300 lbf of radial load before the insert slips on the shaft. The grease fitting is 1/8-27 NPT.
Mounting dimensions
- Pilot diameter: 4 1⁄2 in
- Pilot depth: 7⁄8 in
- Bolt circle diameter: 5 3⁄8 in
- Bolt hole centers: 3 51⁄64 in
- Bolt size: 7⁄16 in
- Height above mounting surface: 1 1⁄2 in
- Housing base diameter: 6 3⁄8 in
- Length through bore: 2 7⁄8 in
- Overall unit width: 3 in
- Shipping weight: 10.5 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 19231050L.
- Balanced Steel and Teflon Labyrinth Seal. A labyrinth seal combining steel with a Teflon element, adding chemical resistance and a wider temperature range to a non-contact design.
- 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 19131050 (triple-lip contact seals), 19131050G (garter seals), 19131050DG (double collar, garter seals), 19131050DL (double collar), 19131050D (double collar, triple-lip contact seals).
Replacement parts
The bearing insert is SLA10-050.
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.