Genuine Oregon Mower Blade, 21in. Part# 91-638

Genuine Oregon Mower Blade, 21in. Part# 91-638

Oregon

$9.98
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SKU:
OEP~91-638
UPC:
032488916382
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Details

  • 5/8" Center hole
  • Enhanced mulching for bagging and discharge efficiency
  • Stays sharp and durable
  • Major brand replacement: Scag
  • Requires 3 blades for 60" cut

Blades

Blade Width Measure near the center of the blade.2.50"
Blade Thickness Measure near the center of the blade.0.203"
Blade Length Measured diagonally from the corners of the blade21"
Center Hole Size Many blades will have a round hole in the center of the blade and you will need to know its diameter. Blade Length 5 or 7 Point Star Center holes may be 5 or 7 point star shaped. 5 point star on blade7 point star on blade Square or Rectangular The MTD built blades on many walk behind lawn mowers have a 'bow-tie' hole. In this case the Oregon replacement blade will have a rectangular center hole which will fit on the bow-tie pattern on the blade adapter. Square or Rectangular hole on blade MTD Blades The MTD® built blades (Bolens, Cub Cadet, Troy-bilt, White, Yard Machine, and Yardman) may have a 6 point star. Oregon replacement blades will have a 'Y' shaped center hole which will fit exactly on the 6 point star on the blade spindle. 6 point star for MTD blades The two sizes of the 6 point star. If your blade spindle has a bolt and lock washer that holds the blade to the machine you would use the 11/16" star or 'Y' blade. blade spindle with bolt and lock washer. If your blade is secured with a large flange nut then you would use the 5/8" star or 'Y' blade. blade spindle with large flange nut5/8"
OffSet (Sometimes referred to as offset): If you set the blade on a table this is the distance the center of the blade is above the table top (if any) when the cutting edges are flat on the table0
Air Lift Air lift is the distance the lift panel rises above the cutting edge.1"

General

ColorBlack
Volume367.741 in3
Product UOMEach
Weight (with Packaging)2.79 Lb
Product Height0.203
Product Length21"
Product Width2.5
Packaged Length22.7"
Packaged Width6"
Packaged Height2.7"

Click these tabs for additional compatibility information.

Replaces

Bobcat:

42180B, WM142180B

Dixon:

522829301, 522936601, 539105711, 539109755, 574481301

Ferris:

20842, 20842s, 481712, 5020842, 5020842s, 5101755, 5101755BM, 5101755S, 5101755YP, 5103305S, A48304

Gravely:

GDU10232

J Thomas:

SG-608

John Deere:

GDU10232, TCU36515

Kees:

101733

Lesco:

50170, 5070, 60116

Scag:

48111, 481708, 481712, 482787, 482879, 482881, 48304

Snapper:

17081, 5103305S, 5104045SYP, 7017081, 7073396, 7073396YP, 7075770, 7075770BMA, 7075770BZ, 7075770YP, 75770

Stens:

340-882

Sunbelt:

B1SC3802

Compatible Models

Ferris:

1000Z, IS2000Z, IS3100Z, IS4500Z, IS5100Z, PCM4818K, PCM6118K, PCM61200, PCT4818B, PCT6118B, PCW6114K, R61R

Scag:

SFZ48-19KA, SFZ48-20FS, SFZ48-26BS, SFZ52-19KA, SFZ52-20FS, SFZ52-26BS, SFZ61-24FS, SFZ61-27BS, SFZ61-28BS, SFZ61-30BS, SFZ61-730FS, SM-61, SM-61A, SM-61B, SM-61E, SM-61V, SMFZ-48, SMFZ-52, SMFZ-61, SMT-52A, SMT-61A, SMT-61A 31BV, SMT-61V, SMT-61V BVAC/BV, SMT-61V STT-31EFI, SMT-72V, SMT-72VS, SMT-72VS STT 31EFI, SMTC-48V, SMWC-52V, SMWC-61A, SMWC-61V, SMZ-61, SSZ-18CV, SSZ-20CV, SSZ-22CV, SSZ4216BV, SSZ4816BV, SSZ4818CV, STC48V-19KAI, STC48V-23CV, STC48V-25CV, STC48V-26BS, STC52V-25CV, STC52V-27CV-SS, STC61V-23BV, STC61V-23FX, STC61V-25CV, STC61V-26CV-EFI, STC61V-27BS, STC61V-27CV, STC61V-730FX, STG-18KH, STHM-18KH, STHM-20CV, STHM-20KH, STHM-20KH-1001, STHM-22CH, STHM-22CV, STHM-23CV, STT-28CAT-SS, STT-29CH-EFI, STT-31EFI-SS, STT-35BVAC, STT-35BVAC-SS, STT-791DFI, STT52-22CH, STT52-25CH, STT52B-22CH, STT52B-22KA, STT52B-25CH, STT52V-27CH, STT52V-29CH-EFI, STT61-22CH, STT61-22KA, STT61-23CH, STT61-25CH, STT61A-22KA, STT61A-23CH, STT61A-23KA, STT61A-25CH, STT61A-27CH, STT61A-27KA, STT61A-29KA-DFI, STT61A-31BV, STT61B-22CH, STT61B-22KA, STT61B-25CH, STT61V-25CH-LP, STT61V-25KA, STT61V-25KBD, STT61V-25KBD-SS, STT61V-26CH-EFI, STT61V-26DFI, STT61V-27CH, STWC61A-27CV, STZ-20KH, SVR61V-25FX, SVR61V-26CV-EFI, SW-14KA, SW-16BV, SW-17KA, SW-18BV, SW-18CVE, SW32-13KA, SW36-13KA, SW36-13KH, SW48-14KA, SW48-14KAE, SW48-14KH, SW48-16BV, SW48-17KA, SWM-61/E, SWM-61A, SWM-61V, SWMU-61A, SWZ, SWZ-14KA, SWZ-16BV, SWZ-16BVE, SWZ-17KA, SWZ-18BV, SWZ-18FS, SWZ-20CVE, SWZ-20FS, SWZ-21KAE, SWZ-22FSE, SWZ-600FS, SWZ-651FSE, SWZ36A-14FS, SWZ36A-16FS, SWZ36A-16FS-LE, SWZ36A-481FS, SWZ48-14KA, SWZ48-14KAE, SWZ48-14KH, SWZ48-16BV, SWZ48-17KA, SWZ48V-15FS, SWZ48V-18FS, SWZ48V-18FS-LE, SWZ48V-541FS, SWZ52V-18FS, SWZ52V-20FS, SWZ52V-600FS