CS AN Lock Nuts - Premium Bearing Lock Nuts AN44-AN100 Series | Taiwan Manufacturer
Premium AN Lock Nuts (AN44-AN100) from CS - Taiwan's trusted manufacturer since 1990. Precision-engineered bearing lock nuts with integral locking for securing bearings, gears, and pulleys without keyway requirements. Download specifications or inquire for customized solutions.
AN Lock Nuts
AN44-AN100 Bearing lock nuts are used to locate bearings onto a shaft. Additionally, they can be used to mount bearings with a tapered bore onto tapered shaft seats and adapter sleeves and to dismount bearings from withdrawal sleeves. Lock nuts are also frequently used to secure gears, belt pulleys, and other machine components.
Locking nuts with integral locking reduce the cost of the shaft as no keyway is required. Installation is quicker and easier because no separate locking device is necessary. Chin Sing manufactures the finest quality of bearing lock nut with durable life cycles.
Model
AN44, AN48, AN52, AN56, AN60, AN64, AN68, AN72, AN76, AN80, AN84, AN88, AN92, AN96, AN100
Drawing
AN (HM 31) Lock Nuts Drawing
Lock Nuts - AN / HM 31
| Lock Nuts NO. | D1 Thread1) | D3 mm | D4 mm | S mm | T mm | D6 mm | Bn mm | i mm | Tapped Holes Threads | Dp mm | Suitable Lock plates No. | Weight kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AN44 | Tr220*4 | 280 | 250 | 20 | 10 | 222 | 32 | 15 | M8*1.25 | 238 | AL44 | 5.2 |
| AN48 | Tr240*4 | 300 | 270 | 20 | 10 | 242 | 34 | 15 | M8*1.25 | 258 | AL48 | 5.95 |
| AN52 | Tr260*4 | 330 | 300 | 24 | 12 | 262 | 36 | 18 | M10*1.5 | 281 | AL52 | 8.05 |
| AN56 | Tr280*4 | 350 | 320 | 24 | 12 | 282 | 38 | 18 | M10*1.5 | 301 | AL56 | 9.05 |
| AN60 | Tr300*4 | 380 | 340 | 24 | 12 | 302 | 40 | 18 | M10*1.5 | 326 | AL60 | 11.8 |
| AN64 | Tr320*5 | 400 | 360 | 24 | 12 | 322.5 | 42 | 18 | M10*1.5 | 345 | AL64 | 13.1 |
| AN68 | Tr340*5 | 440 | 400 | 28 | 15 | 342.5 | 55 | 21 | M12*1.75 | 372 | AL68 | 23.1 |
| AN72 | Tr360*5 | 460 | 420 | 28 | 15 | 362.5 | 58 | 21 | M12*1.75 | 392 | AL72 | 25.1 |
| AN76 | Tr380*5 | 490 | 440 | 32 | 18 | 382.5 | 60 | 21 | M12*1.75 | 414 | AL76 | 30.9 |
| AN80 | Tr400*5 | 520 | 460 | 32 | 18 | 402.5 | 62 | 27 | M16*2 | 439 | AL80 | 36.9 |
| AN84 | Tr420*5 | 540 | 490 | 32 | 18 | 422.5 | 70 | 27 | M16*2 | 459 | AL84 | 43.5 |
| AN88 | Tr440*5 | 560 | 510 | 36 | 20 | 442.5 | 70 | 27 | M16*2 | 477 | AL88 | 45.3 |
| AN92 | Tr460*5 | 580 | 540 | 36 | 20 | 462.5 | 75 | 27 | M16*2 | 497 | AL92 | 50.4 |
| AN96 | Tr480*5 | 620 | 560 | 36 | 20 | 482.5 | 75 | 27 | M16*2 | 527 | AL96 | 62.2 |
| AN100 | Tr500*5 | 630 | 580 | 40 | 23 | 502.5 | 80 | 27 | M16*2 | 539 | AL100 | 63.3 |
Tr means 30°, trapezoid thread and the digits are major diameter of thread and pitch.
Note: The specifications of AN can be applied for HM31.
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Spec. of AN (HM 31)
Spec. of AN44, AN48, AN52, AN56, AN60, AN64, AN68, AN72, AN76, AN80, AN84, AN88, AN92, AN96, AN100
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Why Do Precision Engineers Trust CS AN Lock Nuts for Critical Bearing Applications?
Engineered to exacting tolerances with precise trapezoid threads (30°), our AN Lock Nuts ensure perfect alignment and secure mounting for bearings in high-stress environments. Each dimension—from thread pitch to tapped holes—is meticulously calculated to provide optimal load distribution and prevent loosening under vibration. With complete dimensional compatibility with standard bearing systems and corresponding lock plates (AL series), CS lock nuts deliver the precision reliability that engineering professionals demand for mission-critical applications.
Each AN series lock nut is crafted with trapezoid threads (30°) and precision-machined dimensions to ensure perfect compatibility with corresponding lock plates. Available in sizes ranging from AN44 to AN100, these components feature optimized thread designs, precise tapped holes, and carefully calculated dimensions to withstand demanding industrial environments. With over three decades of manufacturing expertise, Chin Sing ensures each lock nut delivers consistent performance, extended service life, and simplified maintenance, making them the preferred choice for machinery manufacturers and maintenance professionals seeking reliable bearing retention solutions.