Aircraft Bearing

ISO 9001:2008 REGISTERED

Hard to Find?

800-962-4180

Engineers on staff are ready to help!

Control Bearings

MDW, MDPP, MDSP Precision Series
MS27643/MS27647 • MIL-B-7949



Bearing
Number
D
MS
27647
Dash No.
Bore
Outside Diameter
Widths
d
D
B
C
+0.0000,-.0003
+0.000,-.008
+0.0000,-.0004
+0.000,-.010
+0.0000,-0.0025
+0.000,-.064
+0.000,-.005
+0.00,-.13
in.
mm
in.
mm
in.
mm
in.
mm
MDW4K2 (1)
-4AR
0.2500
6.350
0.6250
15.875
0.5620
14.275
0.500
12.70
*MDW4K (1)
-4R
0.2500
6.350
0.7500
19.050
0.8750
22.225
0.750
19.05
*MDW4
-
0.2500
6.350
0.7500
19.050
0.8750
22.225
0.750
19.05
MDW5
-5R
0.3125
7.938
0.8750
22.225
0.9380
23.825
0.813
20.65
MDW6
-6R
0.3750
9.525
1.0625
26.988
1.1880
30.175
1.063
27.00
MDW8
-8R
0.5000
12.700
1.4375
36.512
1.5000
38.100
1.375
34.92
*MDPP3
-
0.1900
4.826
0.7774
19.746
0.4950
12.570
0.473
12.01
MDPP4
-
0.2500
6.350
0.9014
22.896
0.6200
15.750
0.491
12.47
MDPP5
-
0.3125
7.938
1.2500
31.750
0.7450
18.920
0.687
17.45
*MDPP6
-
0.3750
9.525
1.4375
36.512
0.8700
22.100
0.794
20.17
*MDPP8
-
0.5000
12.700
1.6875
42.862
0.9320
23.670
0.856
21.74
*MDPP10
-
0.6250
15.875
1.9375
49.212
0.9950
25.270
0.920
23.37
MS27643
MDSP3 (2)
-3R
0.1900
4.826
0.7774
19.746
0.5000
12.700
0.392
9.96
MDSP4 (2)
-4R
0.2500
6.350
0.9014
22.896
0.6870
17.450
0.464
11.79
MDSP5 (2)
-5R
0.3125
7.938
1.2500
31.750
0.8120
20.620
0.656
16.66
MDSP6 (2)
-6R
0.3750
9.525
1.4375
36.512
0.9370
23.800
0.750
19.05
*MDSP8 (2)
-8R
0.5000
12.700
1.6875
42.862
1.0000
25.400
0.812
20.62
*MDSP10 (2)
-10R
0.6250
15.875
1.9375
49.212
1.1250
28.580
0.937
23.80


Bearing
Number
D
MS
27647
Dash No.
d 1
r 1
r
Wt.
Radial
Limit Load
Rating
Thrust
Limit Load
Rating
Approx.
+0.015,-.000
+0.38,-.00
+0.015,-.000
+0.38,-.00
Approx.
in.
mm
in.
mm
in.
mm
lbs.
kg
lbs.
l\l
lbs.
N
MDW4K2 (1)
-4AR
0.339
8.61
0.005
0.13
0.016
0.41
0.025
0.011
1400
6200
500
2240
*MDW4K (1)
-4R
0.380
9.65
0.005
0.13
0.016
0.41
0.04
0.018
2770
12200
900
4000
*MDW4
-
0.375
9.52
0.005
0.13
0.016
0.41
0.06
0.027
3750
16600
1240
5500
MDW5
-5R
0.469
11.91
0.005
0.13
0.016
0.41
0.07
0.032
5140
22800
1600
7100
MDW6
-6R
0.573
14.55
0.005
0.13
0.016
0.41
0.12
0.054
8440
37500
2600
11600
MDW8
-8R
0.712
18.08
0.005
0.13
0.032
0.81
0.29
0.132
15520
69500
4700
20800
*MDPP3
-
0.302
7.67
0.005
0.13
0.018
0.46
0.04
0.018
2950
13200
1700
7500
MDPP4
-
0.410
10.41
0.005
0.13
0.032
0.81
0.06
0.027
5370
24000
1800
8000
MDPP5
-
0.469
11.91
0.015
0.38
0.032
0.81
0.17
0.077
11000
49000
4000
17600
*MDPP6
-
0.551
14.00
0.015
0.38
0.032
0.81
0.26
0.118
15760
69500
5300
23600
*MDPP8
-
0.735
18.67
0.015
0.38
0.044
1.12
0.38
0.172
23600
1E+05
7800
34500
*MDPP10
-
0.890
22.61
0.015
0.38
0.044
1.12
0.53
0.240
28400
1E+05
9400
41500
MS27643
MDSP3 (2)
-3R
0.304
7.72
0.005
0.13
0.022
0.56
0.04
0.018
1420
6400
200
900
MDSP4 (2)
-4R
0.430
10.92
0.005
0.13
0.032
0.81
0.06
0.027
1780
8000
300
1340
MDSP5 (2)
-5R
0.515
13.08
0.015
0.38
0.032
0.81
0.16
0.073
3740
16600
600
2650
MDSP6 (2)
-6R
0.564
14.33
0.015
0.38
0.032
0.81
0.24
0.109
5100
22800
800
3550
*MDSP8 (2)
-8R
0.775
19.68
0.015
0.38
0.044
1.12
0.36
0.163
7120
31500
1000
4400
*MDSP10 (2)
-10R
0.869
22.07
0.015
0.38
0.044
1.12
0.53
0.240
9000
40000
1300
5850


  • + Double row.
  • + Equipped with Teflon seals.
  • + Exposed surfaces except bore, cap, and seals are cadmium plated.
  • + Prelubricated.
  • (1) Retainer type.
    (2) These bearings are self-aligning for 10° in either direction

  • Note: These bearings should not be used as track rollers, cam follower rolls, and the like.

     

Precision Series CONTROL BEARINGS category

aerospace bearings

Ball Bearings

We can help design/manufacture any bearing. We stock other manufacturers: Barden, Fafrir, MPB, SKF, Kaydon, FAG, ND, KOYO, NSK, RMB, KBC, SMT, GMN, etc.

Cylindrical Roller Bearings

Cylindrical roller bearings for aerospace applications are capable of handling high radial loads and a wide range of application speeds.

Tapered Roller Bearings

Tapered roller bearings can withstand high accelerations and de-accelerations, heavy loads and a variety of temperature and environmental conditions.

Spherical Roller Bearings

Spherical roller bearings are the preferred choice when operating conditions include heavy loads and difficulties with housing alignment or shaft deflection.

Resources

  • our mission

    Our engineers are the best in the industry. We work directly with our OEMs and Bearing Distributors. Our engineers can help you with bearing, shaft and housing tolerances as well as semiconductor applications, cryogenic applications, extreme hostile environments, and extreme delta T temperatures environments.

  • Core Values

    We have one of the largest bearing inventories in the U.S. We stock other manufacturer's bearings. We distribute bearings for extreme high temperature. We will ship all bearing orders the same day for less than any other advertised price.

  • Certifications

    AS9100C and ISO 9001:2008 Certified -Aircraft Bearings enforces a rigorous quality control program to insure that each bearing shipped is made to the highest quality standard. Our goal is to meet and exceed application requirements and customer demands.

CAPABILITIES

We carry

Aircraft Bearing is one of the largest stocking distributors in the world of bearings and bushings for Aerospace applications. Our inventory and experience providing solutions to elite aerospace manufacturers is second to none. Aircraft Bearing stocks bearings for airframe control, hydraulic actuation, pump, APU, electrical actuation, guidance, avionics, engine mount, bleed-air valve, defense system, UAV, and assembly applications.

In addition to bearings, Aircraft Bearing also stocks a range of bearing installation, swaging, and proof load testing tools approved for aerospace applications.

 

We can help design/manufacture any bearing. We stock other manufacturers: Barden, Fafrir, MPB, SKF, Kaydon, FAG, ND, KOYO, NSK, RMB, KBC, SMT, GMN, etc.

 

Affiliated with

Ceramic Bearing, Impact Bearing, and Thinsection Bearing

who we are

We are uniquely positioned to provide OEM's and Distributors a full range of engineered solutions in addition to stocking thousands of bearing and bearing related products to cost-efficiently and consistently provide just-in-time delivery.

 

Our quality is ranked #1 by bearing distributors and OEM's. Our Physical Vapor Deposited Coatings (PVD), Ceramic Balls and Moly/PTFE retainers give you the longest lasting best performing bearings in the industry.

OVERNIGHT DELIVERY.

 

Allow us the opportunity to use our expertise to solve your toughest bearing applications. Please consider us first for your bearing needs as well as all custom bearing requirements.