NTN - Bearing units catalog a-21000-i

ACCESSORIES
ADAPTERS
ntnamericas.com
Notes: 1. The adapter number denotes the complete assembly of adapter
sleeve, locknut and lockwasher/lockplate.
2. Suffix X denotes the narrow slot type of adapter sleeve. The
straight inner tab type of lockwasher (also denoted by suffix X)
should be used with the sleeve.
3. Suffix Y denotes a non–standard thread. This is necessary in
certain cases because of the thin section of the sleeve.
Units
Metric mm
Standard inches
SERIES 23 ADAPTER
Adapter No. d1 B1
H HE HS HA H HE HS HA mm in
d2 B2 B3*
H2304 – – – 17 – – – 31 1.102 32 7 –
H2305X HE2305 – – 20 3
⁄4 – – 35 1.142 38 8 –
H2306X HE2306X HS2306 – 25 1 7
⁄8 – 38 1.220 45 8 –
H2307X – HS2307 – 30 – 1 1 ⁄8 – 43 1.378 52 9 –
H2308X HE2308X HS2308X – 35 1 1 ⁄4 1 3 ⁄8 – 46 1.417 58 10 –
H2309X HE2309X HS2309X HA2309 40 1 1 ⁄2 1 5 ⁄8 1 7 ⁄16 50 1.535 65 11 –
H2310X HE2310X HS2310 HA2310 45 1 3 ⁄4 1 5 ⁄8 1 11 ⁄16 55 1.654 70 12 –
H2311X HE2311XY HS2311 HA2311 50 2 1 7 ⁄8 1 15 ⁄16 59 1.772 75 12 –
H2312X – HS2312 – 55 – 2 1 ⁄8 – 62 1.850 80 13 –
H2313X HE2313X HS2313X HA2313 60 2 1 ⁄4 2 3 ⁄8 2 3 ⁄16 65 1.969 85 14 –
H2315X HE2315X – HA2315 65 2 1 ⁄2 – 2 7 ⁄16 73 2.165 98 15 –
H2316X HE2316X – HA2316 70 2 3 ⁄4 – 2 11 ⁄16 78 2.323 105 17 –
H2317X HE2317X – HA2317X 75 3 – 2 15 ⁄16 82 2.480 110 18 –
H2318X – – HA2318 80 – – 3 3 ⁄16 86 2.559 120 18 –
H2319X HE2319X – – 85 3 1 ⁄4 – – 90 2.677 125 19 –
H2320X HE2320X – HA2320 90 3 1 ⁄2 – 3 7 ⁄16 97 2.795 130 20 –
H2322X HE2322X – HA2322X 100 4 – 3 15 ⁄16 105 3.031 145 21 –
H2324X HE2324 – HA2324 110 4 1 ⁄4 – 4 3 ⁄16 112 4.409 155 22 –
H2326 HE2326 – HA2326 115 4 1 ⁄2 – 4 7 ⁄16 121 4.764 165 23 –
H2328 HE2328 – HA2328 125 5 – 4 15 ⁄16 131 5.157 180 24 –
H2330 HE2330 – HA2330 135 5 1 ⁄4 – 5 3 ⁄16 139 5.472 195 26 –
H2332 HE2332 – HA2332 140 5 1 ⁄2 – 5 7 ⁄16 147 5.787 210 28 –
H2334 HE2334 – HA2334 150 6 – 5 15 ⁄16 154 6.063 220 29 –
H2336 HE2336 – HA2336 160 6 1 ⁄4 – 6 7 ⁄16 161 6.339 230 30 –
H2338 HE2338 – HA2338 170 6 1 ⁄2 – 6 15 ⁄16 169 6.654 240 31 –
H2340 HE2340 – HA2340 180 7 – 7 3 ⁄16 176 6.929 250 32 –
H2344 – – – 200 – – – 183 7.205 280 32 44
H2348 – – – 220 – – – 196 7.717 300 34 46
H2352 – – – 240 – – – 208 8.189 330 36 49
H2356 – – – 260 – – – 221 8.701 350 38 51
*Adapters with the dimension B3 have a locking device as shown in the right illustration.
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