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RBC B538DD sealed control bearing – image 1

RBC B538DD sealed control bearing – image 2

RBC B538DD sealed control bearing – image 3

RBC B538DD sealed control bearing – image 4

RBC B538DD sealed control bearing – image 5

RBC B538DD sealed control bearing – image 6

RBC B538DD sealed control bearing – image 7

RBC B538DD sealed control bearing – image 8

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RBCB538DDSealed Airframe Control Bearing to MS27646-38, 5/8″ Bore x 1-1/16″ OD, Extended Inner Ring 0.281″ / Outer Ring 0.250″, PTFE Seals Both Sides

Name: RBC B538DD Sealed Airframe Control Bearing to MS27646-38, 5/8″ Bore x 1-1/16″ OD, Extended Inner Ring 0.281″ / Outer Ring 0.250″, PTFE Seals Both Sides
Brand: RBC
SKU: AR1B3#GASVQ6
Price: 45.19 USD
Availability: InStock

Condition: New – Open box

Condition Note: New Old Stock

Availability:

1 in stock

Categories: Bearings, Ball Bearing

Sealed control ball bearing to MS27646-38, 5/8 in bore x 1-1/16 in OD, extended inner ring, PTFE seals both sides and 2 oz-in maximum starting torque.

List Price

$45.19

1 in stock

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Specifications

Key Specifications

MFR / Brand	RBC
MPN	B538DD
Model	B538-DD
Bearing Type	Ball Bearing, DD - two PTFE (Teflon) seals, one each side
ID	5/8 in
OD	1-1/16 in
Width	9/32 x 1/4 in

Technical Specifications

Material	Steel
Base Number	B538
Industry Terms	airframe control bearing, aircraft control bearing, oscillating pivot bearing, sealed precision ball bearing, extended inner ring bearing, wide inner ring control bearing, mil-spec ball bearing
Common Misspellings	B358DD, B358-DD, B538DP, B538 D D, B5380D, MS27646 38, MS 27646-38
Application Types	Aircraft flight control linkages, bellcranks, control rod ends, pulleys and cable idlers, torque tubes, flap and aileron pivots, low-torque oscillating joints
Bore Shaft Size	0.6250 in (5/8"), tolerance +/-0.0007 in
Mpn Variants	B538DD, B538-DD, B538 DD, B538, MB538DD, MS27646-38, MS27646, B358DD (as-listed transposition)
Compatible With Replaces	MS27646-38
Additional Attributes	Thrust static capacity 1,500 lbf (6,700 N); ball complement 21 x 1/8 in, full complement; operating temperature -65 to +250 F; rings and balls AISI 52100; cadmium plated exterior; MIL-PRF-81322 grease, prelubricated for life; inner ring 0.031 in wider than outer ring. Sources: RBC ACBB_MS27646.pdf, NHBB b500-dd-series.pdf
Dynamic Load Rating	1,990 lbf inner ring rotating; 1,820 lbf outer ring rotating
Static Load Rating	14,600 N (3,280 lbf) radial; 6,700 N (1,500 lbf) thrust
Item Weight	0.014 kg (0.03 lb)
Number Of Rows	1
Part Number	B538DD

Cross-References

Cross Reference 1	NHBB B538DD
Cross Reference 2	MS27646-38
Cross Reference 3	MB538DD - precision series, clearance 0.0001-0.0005 in
Cross Reference 6	MB500DD series
Cross Reference 7	B358DD (incorrect as-listed number, retained for search)
Cross Reference 9	RBC Nice / Heim B538DD

Seller Part Number: AR1B3#GASVQ6

Product Description

What this part is:

RBC B538DD single-row ball control bearing to MS27646-38 (SAE-AS7949), B500DD extra light duty series, with PTFE seals on both sides and an extended inner ring. Unit Quantity: 1 Pc.

Decoding the designation:

B500DD — extra light duty, single-row, sealed ball control bearing series, dimensionally interchangeable with the unsealed B500 series.

38 — MS27646 dash number for the 5/8 in bore size.

DD — PTFE seals on both sides.

Specifications:

Bore Diameter: 0.6250 in (15.875 mm), tolerance +/-0.0007 in. Outside Diameter: 1.0625 in (26.988 mm), tolerance +0.0000/-0.0010 in. Inner Ring Width: 0.281 in (7.14 mm). Outer Ring Width: 0.250 in (6.35 mm). Radial Static Load Capacity: 3,280 lbf (14,600 N). Thrust Static Load Capacity: 1,500 lbf (6,700 N). Dynamic Radial Load Rating, inner ring rotating: 1,990 lbf. Dynamic Radial Load Rating, outer ring rotating: 1,820 lbf. Maximum Starting Torque: 2 oz-in. Radial Internal Clearance: 0.0008 to 0.0018 in. Seals: two PTFE seals. Material: AISI 52100 chrome steel rings and balls. Weight: 0.03 lb (0.014 kg). Operating Temperature: -65 to +250 °F.

Dimensions and mounting:

Ball complement: 21 balls of 1/8 in diameter, full complement with no retainer. Outer ring shoulder diameter: 0.898 in. Inner ring shoulder diameter: 0.785 in. Chamfer: 0.015 in at 45 degrees on each ring. The inner ring is 0.031 in wider than the outer ring. Surfaces other than the bore and seals are cadmium plated. Prelubricated for life with MIL-PRF-81322 grease. Starting torque limits apply to MIL-PRF-81322 grease; MIL-PRF-23827 grease multiplies them by 1.2.

Compatibility and replacement:

Cross-references: NHBB B538DD, MS27646-38, MB538DD (MB500DD precision series, radial internal clearance 0.0001 to 0.0005 in). Also written as B538-DD, B538 DD, B538, MB538DD and MS27646. The part was originally listed as B358DD, a transposition of B538DD.

Frequently asked questions:

What size is the B538DD MS27646-38 bearing?

0.6250 in (5/8 in) bore, 1.0625 in (1-1/16 in) outside diameter, 0.281 in inner ring width and 0.250 in outer ring width.

What are the load limits and starting torque?

Radial static capacity 3,280 lbf, thrust static capacity 1,500 lbf, dynamic radial 1,990 lbf inner ring rotating and 1,820 lbf outer ring rotating, maximum starting torque 2 oz-in.