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About Carriages and Guide Rails
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Stabilize your carriages against pitch, roll, and yaw forces by installing them in pairs.
Metric Fast-Travel Ultra-Precision Lead Screws and Nuts
 |
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. To ensure compatibility, select components that have the same thread size and number of thread starts.
Lead Screw—Right-Hand Thread
 |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
Thread Size | Lg., mm | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | ||||||||||||
| M2 × 0.4 mm | 145 | Metric Rounded Trapezoidal | 2:1 | 2 | 0.75 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N101 | 0000000 | ||
| M2 × 0.4 mm | 145 | Metric Rounded Trapezoidal | 4:1 | 4 | 1.5 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N102 | 000000 | ||
| M2 × 0.4 mm | 145 | Metric Rounded Trapezoidal | 8:1 | 8 | 3 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N103 | 000000 | ||
| M3 × 0.5 mm | 145 | Metric Rounded Trapezoidal | 2:1 | 2 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N104 | 000000 | ||
| M3 × 0.5 mm | 145 | Metric Rounded Trapezoidal | 6:1 | 6 | 3 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N105 | 000000 | ||
| M3 × 0.5 mm | 145 | Metric Rounded Trapezoidal | 12:1 | 12 | 6 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N106 | 000000 | ||
| M4 × 1 mm | 145 | Metric Rounded Trapezoidal | 4:1 | 4 | 4 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N107 | 000000 | ||
| M4 × 1 mm | 145 | Metric Rounded Trapezoidal | 8:1 | 8 | 8 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N108 | 000000 | ||
Lead Screw with One Machinable End—Right-Hand Thread
 |
Lead screws with one machinable end let you create your own custom connection to suit your application.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
End, mm | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg., mm | Thread Type | Dia. | Lg. | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
17-4 PH Stainless Steel | ||||||||||||||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 2:1 | 2 | 0.75 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N121 | 0000000 | ||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 4:1 | 4 | 1.5 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N122 | 000000 | ||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 8:1 | 8 | 3 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N123 | 000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 2:1 | 2 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N124 | 000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 6:1 | 6 | 3 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N125 | 000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 12:1 | 12 | 6 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N126 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 4:1 | 4 | 4 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N127 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 8:1 | 8 | 8 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N128 | 000000 | ||
Lead Screw with One Coupling End—Right-Hand Thread
 |
Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
End, mm | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg., mm | Thread Type | Dia. | Lg. | For Shaft Dia. | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
17-4 PH Stainless Steel | |||||||||||||||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 2:1 | 2 | 0.75 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N141 | 0000000 | ||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 4:1 | 4 | 1.5 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N142 | 000000 | ||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 8:1 | 8 | 3 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N143 | 000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7.5 | 15.5 | 3 | 2:1 | 2 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N144 | 000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7.5 | 15.5 | 3 | 6:1 | 6 | 3 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N145 | 000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7.5 | 15.5 | 3 | 12:1 | 12 | 6 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N146 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 8.5 | 15.5 | 4 | 4:1 | 4 | 4 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N147 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 8.5 | 15.5 | 4 | 8:1 | 8 | 8 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N148 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 9.5 | 15.5 | 5 | 4:1 | 4 | 4 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N149 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 9.5 | 15.5 | 5 | 8:1 | 8 | 8 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 4537N151 | 000000 | ||
Metric Ultra-Precision Lead Screws and Nuts
 |
Operating with less backlash (play) than Metric Precision Acme Lead Screws and Nuts, these provide increased nut life and more reliable movement in automated systems. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest. To ensure compatibility, select components that have the same thread size, thread type, thread size, thread pitch, and number of thread starts.
Lead Screw—Right-Hand Thread
 |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
Thread Size | Lg., mm | Thread Type | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | ||||||||||||
| M2 × 0.4 mm | 145 | Metric Rounded Trapezoidal | 1:1 | 1 | 0.375 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A110 | 0000000 | ||
| M3 × 0.5 mm | 145 | Metric Rounded Trapezoidal | 1:1 | 1 | 0.5 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A120 | 000000 | ||
| M4 × 1 mm | 145 | Metric Rounded Trapezoidal | 1:1 | 1 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A130 | 000000 | ||
Lead Screw with One Machinable End—Right-Hand Thread
 |
Lead screws with one machinable end let you create your own custom connection to suit your application.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
End, mm | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg., mm | Thread Type | Dia. | Lg. | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
17-4 PH Stainless Steel | ||||||||||||||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 1:1 | 1 | 0.375 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A140 | 0000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 1:1 | 1 | 0.5 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A150 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 7 | 25 | 1:1 | 1 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A160 | 000000 | ||
Lead Screw with One Coupling End—Right-Hand Thread
 |
Lead screws with one coupling end connect directly with your shaft without extra machining. Torque down the locknut once inserted.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
End, mm | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg., mm | Thread Type | Dia. | Lg. | For Shaft Dia. | Speed Ratio | No. of Thread Starts | Travel Distance per Turn, mm | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |||
17-4 PH Stainless Steel | |||||||||||||||
| M2 × 0.4 mm | 150 | Metric Rounded Trapezoidal | 6.5 | 15 | 2 | 1:1 | 1 | 0.375 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A170 | 0000000 | ||
| M3 × 0.5 mm | 150 | Metric Rounded Trapezoidal | 7.5 | 15.5 | 3 | 1:1 | 1 | 0.5 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A180 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 8.5 | 15.5 | 4 | 1:1 | 1 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A190 | 000000 | ||
| M4 × 1 mm | 150 | Metric Rounded Trapezoidal | 9.5 | 15.5 | 5 | 1:1 | 1 | 1 | ±0.15 mm/300 mm | Rockwell C35 | 145,000 | 90500A210 | 000000 | ||
Corrosion-Resistant Ball Screws and Nuts
 |  |  |  |  |
Ball Nuts, Externally Threaded Nut, Style A | Ball Nuts, Externally Threaded Nut, Style B | Ball Nuts Flange Nut Style C | Ball Nuts Flange Nut Style D |
Ball Screws—Right-Hand Threaded
 |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
Root Diameter—Root diameter indicates the diameter the ball screw will be after machining away the threads.
Thread Size | Lg., ft. | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Root Dia. | Hardness | Tensile Strength, psi | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | ||||||||||||
| 3/8"-8 | 1 | 1 | 0.125" | ±0.005"/1 ft. | 0.3" | Rockwell C38 | 150,000 | -65 to 300 | 6641K13 | 0000000 | ||
| 3/8"-8 | 2 | 1 | 0.125" | ±0.004"/1 ft. | 0.3" | Rockwell C38 | 145,000 | -65 to 300 | 6641K1 | 000000 | ||
| 3/8"-8 | 4 | 1 | 0.125" | ±0.004"/1 ft. | 0.3" | Rockwell C38 | 145,000 | -65 to 300 | 6641K2 | 000000 | ||
| 5/8"-5 | 2 | 1 | 0.2" | ±0.004"/1 ft. | 0.5" | Rockwell C38 | 145,000 | -65 to 300 | 6641K6 | 000000 | ||
| 5/8"-5 | 4 | 1 | 0.2" | ±0.004"/1 ft. | 0.5" | Rockwell C38 | 145,000 | -65 to 300 | 6641K7 | 000000 | ||
| 5/8"-5 | 6 | 1 | 0.2" | ±0.004"/1 ft. | 0.5" | Rockwell C38 | 145,000 | -65 to 300 | 6641K8 | 000000 | ||
Externally Threaded Ball Nuts—Right-Hand Threaded
| |
Style A | Style B |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
Style | Thread Size | Lg. | Wd. | Ht. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | ||||||||||||||||
| A | 3/8"-8 | 1" | — | — | 3/4" | 1 | 0.125" | 0.664"-32 | Rockwell C38 | 25 | 0.007" | -65 to 300 | 6641K9 | 0000000 | ||
| B | 5/8"-5 | 1 23/32" | 1" | 1" | — | 1 | 0.2" | 15/16"-16 | Rockwell C38 | 170 | 0.007" | -65 to 300 | 6641K12 | 000000 | ||
Flange Ball Nuts—Right-Hand Threaded
| |  |
Style C | Style D |
Flange | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Thread Size | Lg. | Wd. | Ht. | Dia. | Dia. | Thk. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||
17-4 PH Stainless Steel | ||||||||||||||||||
| C | 3/8"-8 | 1" | — | — | 3/4" | 1 19/32" | 17/64" | 1 | 0.125" | 1 15/64" | Rockwell C38 | 25 | 0.007" | -65 to 300 | 6641K21 | 0000000 | ||
| D | 5/8"-5 | 1 47/64" | 1" | 1" | — | 2 19/32" | 17/32" | 1 | 0.2" | 2 3/32" | Rockwell C38 | 170 | 0.007" | -65 to 300 | 6641K23 | 000000 | ||
Fast-Travel Corrosion-Resistant Ball Screws and Nuts
 |
Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.
Ball Screws—Right-Hand Threaded
 |  |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
Root Diameter—Root diameter indicates the diameter the ball screw will be after machining away the threads.
Thread Size | Lg., ft. | No. of Thread Starts | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Root Dia. | Hardness | Tensile Strength, psi | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | ||||||||||||
| 1/2"-4 | 1 | 2 | 0.5" | ±0.005"/1 ft. | 0.4" | Rockwell C38 | 150,000 | -65 to 300 | 6641K14 | 0000000 | ||
| 1/2"-4 | 2 | 2 | 0.5" | ±0.004"/1 ft. | 0.4" | Rockwell C38 | 145,000 | -65 to 300 | 6641K3 | 000000 | ||
| 1/2"-4 | 4 | 2 | 0.5" | ±0.004"/1 ft. | 0.4" | Rockwell C38 | 145,000 | -65 to 300 | 6641K4 | 000000 | ||
| 1/2"-4 | 6 | 2 | 0.5" | ±0.004"/1 ft. | 0.4" | Rockwell C38 | 145,000 | -65 to 300 | 6641K5 | 000000 | ||
| 3/4"-4 | 3 | 2 | 0.5" | ±0.005"/1 ft. | 0.63" | Rockwell C38 | 150,000 | -65 to 300 | 6641K15 | 000000 | ||
| 3/4"-4 | 6 | 2 | 0.5" | ±0.005"/1 ft. | 0.63" | Rockwell C38 | 150,000 | -65 to 300 | 6641K16 | 000000 | ||
Externally Threaded Ball Nuts—Right-Hand Threaded
 |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
Thread Size | Lg. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17-4 PH Stainless Steel | |||||||||||||
| 1/2"-4 | 1 3/4" | 1 1/16" | 2 | 0.5" | 15/16"-16 | Rockwell C38 | 140 | 0.007" | -65 to 300 | 6641K32 | 0000000 | ||
| 3/4"-4 | 2 15/16" | 1 5/16" | 2 | 0.5" | 1 1/4"-16 | Rockwell C38 | 600 | 0.007" | -65 to 300 | 6641K17 | 000000 | ||
Flange Ball Nuts—Right-Hand Threaded
 | |
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a ball nut moves with one revolution of the ball screw.
Flange | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg. | Dia. | Dia. | Thk. | No. of Thread Starts | Travel Distance per Turn | Bolt Circle Dia. | Hardness | Dynamic Thrust Load Cap., lb. | Max. Backlash | Temp. Range, ° F | Each | |||
17-4 PH Stainless Steel | |||||||||||||||
| 1/2"-4 | 1 29/32" | 1 1/16" | 2 19/32" | 17/32" | 2 | 0.5" | 2 3/32" | Rockwell C38 | 140 | 0.007" | -65 to 300 | 6641K42 | 0000000 | ||
| 3/4"-4 | 2 15/16" | 1 5/16" | 2 19/32" | 17/32" | 2 | 0.5" | 2 3/32" | Rockwell C38 | 600 | 0.007" | -65 to 300 | 6641K18 | 000000 | ||
