IKO Separable Roller Follower- Metric, NAST20ZZUU, Double Sealed, 20 mm Bore, 47 mm OD
IKO Separable Roller Follower consists of inner ring, needle roller cage, side plates and thick-walled outer ring to withstand heavy rolling or shock loads. These parts can be easily separated providing an easy handling. Roller Followers are available with Crowned or Cylindrical outer rings. The crowned outer ring relieves edge load created by mounting error and the cylindrical is suitable for applications with large loads or low track surface hardness due to a large contact area with mating track surface. Double Sealed followers (suffix ZZUU & ZZUUR) come with pre-packed grease. Since no grease is provided for Double Shielded (suffix ZZ & ZZR), adequate lubrication must be added. Sufficient lubrication is needed between roller followers and steel track on which cam followers run, to prevent seizure and to reduce friction.
Product Specifications
BRANDIKO
DYNAMIC LOAD RATING (N)19400
STATIC LOAD RATING (N)24500
MANUFACTURER PART NUMBERNAST20ZZUU
OD MM (INCH)47
OVERALL WIDTH MM (INCH)20
BORE DIAMETER MILLIMETERS (INCH)20
RADIAL CLEARANCE0.010 to 0.030
SIDE PLATE OD (A) MM (INCH)38
OUTER RING CORNER RADIUS MIN. MM (INCH)3
TOLERANCE OUTER RING WIDTH (MM)+0 / -0.120
TOLERANCE OVERALL WIDTH (MM)+0 / -0.120
OUTER RING WIDTH MM (INCH)19.8
SHAFT DIA G6 FIT (MM)-0.007 to -0.020
SHAFT DIA H6 FIT (MM)+0 to -0.013
INNER RING CORNER RADIUS MIN. MM (INCH)1
PREPACKED GREASEYES
TRACK CAPACITY (N)13800
CROWN RADIUS (R) mm (inch)--
NEEDLE CONSTRUCTIONCaged
RETAINERPressed Steel
OIL HOLE & GROOVEAt inner ring
SERIESNAST
TYPEDouble Sealed
DESCRIPTIONSeparable Roller Follower - Metric Series