Page 300 - needle bearings

Linear Ball Bearings
NTN

Applied shaft
Type diameter (mm) Composition of nominal number
KD
KD 20 32 45 LL
This type composed of an outer ring, Tail code
steel balls and a cage is a cylindrical
Shaft diameter Width
bearing for the most universal
applications, which ensures precise and П10ʙП80 Outer diameter
smooth infinite linear motion due to its Inscribed circle
outer ring of high rigidity. diameter
Type code

FF
FFʝZW
This type composed of a cage and FF 25 18 ZW
needle rollers ensures smooth
reciprocating motion of less friction Tail code
actor by being inserted between two Width
planes in relative position. The cage Roller diameter
made of polyamide resin is provided П2ʙП3.5 Roller diameter
with grooved joint at its both ends so ʷ10
several cages can be jointed together
into one unit. Type code

BFʢRFʣ
This type composed of a cage and BF 30 20 / 1000
needle rollers ensures smooth
reciprocating motion of less friction
factor by being inserted between two Cage overall
length
planes in relative position. Press-formed
Roller diameter
steel plate cage (BF) and polyamde Width
П3ʙП7
resin cage (RF) are selectively available. Roller diameter
However, in the case of this bearing type ʷ10
several bearings can't not be jointed Type code
together into one unit.

RLM

RLM 26 ʷ 86
This type is composed of a track frame,
a separator and rollers. This type has Bearing overall
length
the function enabling cylindrical rollers to Section height
circulate within the track frame and 16ʙ38 Section height
ensures infinite linear motion on a plane.
Type code

B-238