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Wide slot, standard duty with eccentric locking collar.
  • Cast iron housing
  • Wide inner race bearing
  • B-type seals
  • L3-type seals available in some sizes
NAT Take Up Units
Unit of Measure
1 2 

Item #

d - Shaft Dia.

O - Dimension

G - Dimension

P - Dimension

Q - Dimension

S - Dimension

NAT 201 N/A 12 mm N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 201 8 N/A 0.5 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 202 N/A 15 mm N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 202 10 N/A 0.625 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 203 N/A 17 mm N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 204 12 N/A 0.75 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 204 20MM N/A 20 mm N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 205 14 N/A 0.875 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 205 15 N/A 0.9375 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 205 25MM N/A 25 mm N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 205 16 N/A 1 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 in51 mm N/A 1 1/4 in32 mm N/A 3/4 in19 mm
NAT 206 17 N/A 1 1/16 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 7/32 in56 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 206 18 N/A 1.125 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 7/32 in56 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 206 30MM N/A 30 mm N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 7/32 in56 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 206 19 N/A 1.1875 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 7/32 in56 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 206 20 N/A 1.25 in N/A 5/8 in16 mm N/A 13/32 in10 mm N/A 2 7/32 in56 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 207 20 N/A 1.25 in N/A 5/8 in16 mm N/A 1/2 in13 mm N/A 2 17/32 in64 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 207 21 N/A 1 5/16 in N/A 5/8 in16 mm N/A 1/2 in13 mm N/A 2 17/32 in64 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 207 22 N/A 1.375 in N/A 5/8 in16 mm N/A 1/2 in13 mm N/A 2 17/32 in64 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 207 35MM N/A 35 mm N/A 5/8 in16 mm N/A 1/2 in13 mm N/A 2 17/32 in64 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 207 23 N/A 1.4375 in N/A 5/8 in16 mm N/A 1/2 in13 mm N/A 2 17/32 in64 mm N/A 1 15/32 in37 mm N/A 55/64 in22 mm
NAT 208 24 N/A 1.5 in N/A 3/4 in19 mm N/A 5/8 in16 mm N/A 3 9/32 in83 mm N/A 1 15/16 in49 mm N/A 1 9/64 in29 mm
NAT 208 25 N/A 1 9/16 in N/A 3/4 in19 mm N/A 5/8 in16 mm N/A 3 9/32 in83 mm N/A 1 15/16 in49 mm N/A 1 9/64 in29 mm
NAT 208 40MM N/A 40 mm N/A 3/4 in19 mm N/A 5/8 in16 mm N/A 3 9/32 in83 mm N/A 1 15/16 in49 mm N/A 1 9/64 in29 mm
NAT 209 26 N/A 1.625 in N/A 3/4 in19 mm N/A 5/8 in16 mm N/A 3 9/32 in83 mm N/A 1 15/16 in49 mm N/A 1 9/64 in29 mm
Unit of Measure
1 2