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DW and GDW Series / MDW and MGDW Series

DW GDW series bearings and MDW and MGDW series bearings are manufactured to AS27647 per AS7940. These airframe control and aerospace bearings are Made in USA.

Aircraft Control Bearing

  • Manufactured to AS27647 per AS7949
  • Extra wide double row ball bearing
  • All external surfaces except bore and stainless steel seal retainers are cadmium plated
  • Installed with PTFE seals
  • Pre-lubricated (see grease specifications)
  • These series is dimensionally interchangeable except the GDW series can be re-lubricated, through holes and a groove in the outer ring

MDW and MGDW Series Bearings

  • Precision Series tolerances in light blue
  • When ordering precision parts be sure to add the “M” prefix to the standard part number
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DW Series Schematic
(Click on Bearing Part Number to get 2D/3D CAD files from VirtualCAD)
Bearing Part Number
MS 27647-
Bore d (in.)
Outside Diameter D (in.)
Inner Ring Width B (in.)
Outer Ring Width C (in.)
Inner Land Diameter
Inner Ring Chamfer
Outer Ring Chamfer
Radial Limit Load Rating
Thrust Limit Load Rating
+.0000 -.0005
+.0000 -.0003
+.0000 -.0005
+.0000 -.0004
+.000 -.005
+.0000 -.0025
+.000 -.005
+.000 -.005
d1 (in.)
c1* (in.)
c* (in.)
(lbs.) †
(lbs.) †
DW4K2*
-4A
0.2500
0.6250
0.562
0.500
0.339
0.005
0.016
1400
500
GDW4K*
-4AG
0.2500
0.6250
0.562
0.500
0.339
0.005
0.016
1400
500
DW4K*
-4
0.2500
0.7500
0.875
0.750
0.380
0.005
0.016
2770
900
GDW4K*
-4G
0.2500
0.7500
0.875
0.750
0.380
0.005
0.016
2770
900
DW4
–
0.2500
0.7500
0.875
0.750
0.375
0.005
0.016
3750
1240
GDW4
–
0.2500
0.7500
0.875
0.750
0.375
0.005
0.016
3750
1240
DW5
-5
0.3125
0.8750
0.938
0.813
0.469
0.005
0.016
5140
1600
GDW5
-5G
0.3125
0.8750
0.938
0.813
0.469
0.005
0.016
5140
1600
DW6
-6
0.3750
1.0625
1.188
1.063
0.573
0.005
0.016
8440
2600
GDW6
-6G
0.3750
1.0625
1.188
1.063
0.573
0.005
0.016
8440
2600
DW8
-8
0.5000
1.4375
1.500
1.375
0.712
0.005
0.032
15520
4700
GDW8
-8G
0.5000
1.4375
1.500
1.375
0.712
0.005
0.032
15520
4700
wdt_ID Part Number MS 27647- Bore d (in.)<br>+.0000 to -.0005<br>+.0000 to -.0003 Outside Diameter D (in.)<br>+.0000 to -.0005<br>+.0000 to -.0004 Inner Ring Width B (in.)<br>+.000 to -.005<br>+.0000 to -.0025 Outer Ring Width C (in.)<br>+.000 to -.005<br>+.000 to -.005 Inner Land Diameter<br>d1 (in.) Inner Ring Chamfer<br>c1 (in.) Outer Ring Chamfer<br>c (in.) Radial Limit Load Rating (lbs.) † Thrust Limit Load Rating (lbs.) † Footnote(**)
1 DW4K2* -4A 0.25 0.625 0.562 0.500 0.339 0.005 0.016 1400 500 Retainer Type
2 GDW4K2* -4AG 0.25 0.625 0.562 0.500 0.339 0.005 0.016 1400 500 Retainer Type
3 DW4K* -4 0.25 0.75 0.875 0.750 0.380 0.005 0.016 2770 900 Retainer Type
4 GDW4K* -4G 0.25 0.75 0.875 0.750 0.380 0.005 0.016 2770 900 Retainer Type
5 DW4 – 0.25 0.75 0.875 0.750 0.375 0.005 0.016 3750 1240
6 GDW4 – 0.25 0.75 0.875 0.750 0.375 0.005 0.016 3750 1240
7 DW5 -5 0.3125 0.875 0.938 0.813 0.469 0.005 0.016 5140 1600
8 GDW5 -5G 0.3125 0.875 0.938 0.813 0.469 0.005 0.016 5140 1600
9 DW6 -6 0.375 1.0625 1.188 1.063 0.573 0.005 0.016 8440 2600
10 GDW6 -6G 0.375 1.0625 1.188 1.063 0.573 0.005 0.016 8440 2600
11 DW8 -8 0.5 1.4375 1.500 1.375 0.712 0.005 0.032 15520 4700
12 GDW8 -8G 0.5 1.4375 1.500 1.375 0.712 0.005 0.032 15520 4700
Part Number MS 27647- Bore d (in.)<br>+.0000 to -.0005<br>+.0000 to -.0003 Outside Diameter D (in.)<br>+.0000 to -.0005<br>+.0000 to -.0004 Inner Ring Width B (in.)<br>+.000 to -.005<br>+.0000 to -.0025 Outer Ring Width C (in.)<br>+.000 to -.005<br>+.000 to -.005 Inner Land Diameter<br>d1 (in.) Inner Ring Chamfer<br>c1 (in.) Outer Ring Chamfer<br>c (in.) Radial Limit Load Rating (lbs.) † Thrust Limit Load Rating (lbs.) † Footnote(**)

† Refer to the Technical Info section for Bearing Life Calculations.

* Retainer Type

Notes:
  1. Do not use bearings as track rollers, cam follower rolls or for similar applications.
  2. Check with Schatz Bearing Corporation for current approval status.
  3. Contact Schatz Bearing Corporation’s Engineering Department for further technical information.
  4. Check with Schatz Bearing Corporation’s Sales Department for price and availability.
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