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Pillow Blocks - Standard (PBRS25)

Pillow Blocks - Standard:Related Image
Accuracy: JIS B 1558, JIS B 1559
Bearing Inner Diameter Tolerance: H7 (Clearance Fit)
Operating Temperature: -10 ~ +80°C
[ ! ]* 2-M (Set Screw) angles are 120° for set screws and 90° for eccentric rings.
[ ! ]Eccentric rings are used to secure shafts.
[ ! ]Ball bearing moves slightly due to self-aligning function.
[ ! ]To maintain transition fit, the fit between the main body and the bearing is designed slightly tight (Except Cast Iron Type). If the bearing is inclined when delivered, insert the shaft into the bearing to adjust the inclination.
・Materials
TypePillow BlocksComponent [ M ]Material
①Housing②Bearing③Rubber Seal④Set Screw⑤Eccentric Ring
Set Screw FixedPBTZinc Alloy Die Casting (ZDC)52100 Bearing SteelNitrile Rubber (NBR Nitrile Rubber )4137 Alloy Steel-
Eccentric Ring FixedPBRZinc Alloy Die Casting (ZDC)52100 Bearing SteelNitrile Rubber (NBR Nitrile Rubber )4137 Alloy Steel1020 Carbon Steel
PBRSZinc Alloy Die Casting (ZDC)
+ Nickel Chrome Plating
440C Stainless SteelNitrile Rubber (NBR Nitrile Rubber )304 Stainless Steel1020 Carbon Steel
+ Nickel Chrome Plating
PBRSXStainless Steel Cast (CF-8 Stainless Steel Cast)440C Stainless SteelNitrile Rubber (NBR Nitrile Rubber )304 Stainless Steel304 Stainless Steel

Specifications

Part Number
PBR15
Part NumberHLL1AdtH1BS
PBTPBRSXPBTPBRSXPBTPBR
PBRS
PBRSX
TypeD
PBT
PBR
PBRS
PBRSX(D10~25)
101867531676535341417.54
1219715616766383714.517.54
1522806316776434216.518.54.5
1724856718777474617.520.55
2028100802010985553.52124.56
25321129020101096260.522.525.56
3036132106261311-70-24.526.56.5
DBasic Load RatingSet Screw Detailed DimensionsMass (g)
Cr (Dynamic) NCor (Static) NSet Screw FixedEccentric Ring FixedPBTPBR
PBRS
PBRSX
PBTPBRSPBTPBRSMTightening TorqueAxial Load Capacity (kN)MTightening TorqueAxial Load Capacity (kN)
PBRPBRSXPBRPBRSX(N • m)(N • m)
104600390020001550M3x0.350.590.35M4x0.71.50.88707779
125100430024001900809198
155600475028002250M4x0.51.470.43120125129
176000510033002650140156170
209350790051004000M5x0.52.940.72M5x0.82.91.76210230258
2510100860058004650270294333
30132001130083006600410454-
[ ! ]kgf=Nx0.101972

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Part Number
PBRS25
Part NumberVolume DiscountDays to Ship RoHSBearing Inner Dia. Shape Unit Body Material Material Bearing Shaft Bore Dia. D
(φ)
Mounting Height H
(mm)
Basic Load Rating Cr (Dynamic)
(N)
Basic Load Rating Cor (Static)
(N)
Available

4 Days or more

6Eccentric Ring[Cast Iron] Zinc Alloy Die Casting (ZDC)440C Stainless Steel253286004650

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  1. 1

More Information

Pillow Blocks - Standard:Related Image
■How to Secure the Shaft
Set Screw Fixed•There are two set screws at the end face of the bearing inner ring (at 120°).
The shaft is connected by tightening the set screws.
Eccentric Ring Fixed•Dissociate the centers of the convex outer surface at the end of the bearing inner race (part a) and the concave inner surface of the eccentric ring (part b), connect the shaft and the inner ring by forming a wedge on the circumference (Refer to Fig. 1).
•Also, there is a set screw and a hole each (at the angle of 90°) on the end face of eccentric ring, which helps to prevent loosening by using the set screw as well as tightening as described above.
•The D hole is for inserting a small diameter rod when loosening the connection.

Basic Information

Unit, Type Ball Bearing Units Bearing Unit, Type Pillow Blocks Pillow Type, Category Standard
Surface Treatment Not Provided

Please check the type/dimensions/specifications of the part PBRS25 in the Pillow Blocks - Standard series.

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