R30K

For OEM & MRO Procurement
R30K
R30K Specifications Table

Single Groove

Ralmark
Part Numbers
FAA-PMA
Approval
Cable Size Max
(ref)
ØAØBØDEFGKBearing Part Number
Outside
Diameter
+0.000
-0.010
Groove
Diameter
+0.000
-0.010
Bore Diameter
(ref)
I.R. Width
(ref)
Groove RadiusWidth at FlangeGroove Width
MINMAXMINMAX
R30K-1SYes3/32"3.3133.000.2500.4380.0470.050.02750.3100.150+0.000
-0.010
P4K
R30K-2SYes3/16"
Jacketed
Cable
5.5004.875.3125.6250.1250.1300.4930.5070.350+0.000
-0.010
PD5K
R30K-3SYes4.2503.625
R30K-4SYes3.0002.375
R30K-5SYes3/16"5.6305.005.5000.7500.0940.0970.4970.5070.265+0.000
-0.010
P8
R30K-6SYes4.1303.505P10K
R30K-7SYes3/32"2.6302.317.6250.4380.0470.0500.2750.3100.150+0.000
-0.010

Double Groove

Ralmark
Part Numbers
FAA-PMA
Approval
Cable Size Max
(ref)
ØAØBØDEFGKBearing Part Number
Outside
Diameter
+0.000
-0.010
Groove
Diameter
+0.000
-0.010
Bore Diameter
(ref)
I.R. Width
(ref)
Groove RadiusWidth at FlangeGroove Width
MINMAXMINMAX
R30K-1DYes3/32"2.6302.317.2500.6200.0470.0500.5250.5350.150±0.010DPP4
R30K-2DYes1.7551.443.2500.6200.0470.0500.5250.5350.150±0.010

Notes

Dimensions are for size reference only. Please contact Ralmark Company for more engineering detail. R30K pulleys are also available with stainless steel CRES bearings, and are designated with “C” suffix, e.g. R30K-3SC. Please check our FAA-PMA page for a list of approved CRES bearing pulley’s.

Materials

Non-metallic sheaves are machined from an engineered phenolic laminate exceeding the requirements of MIL-I-24768/16.

Ralmark Company is a Boeing approved OEM manufacturer for the BACP30K series of pulleys.

Ralmark Company holds FAA-PMA approval for Boeing BACP30F series pulleys. FAA/PMA designated pulleys are intended for MRO aftermarket procurement. The FAA-PMA designation is not applicable when procured for OEM or OEM new equipment sub-contractor requirements.