Lead Screw Nuts / Anti-Basklash Type
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Dimensional Drawing
| Over | or less | Tolerance |
| 3 | 6 | 0 －0.018 |
| 6 | 10 | 0 －0.022 |
| 10 | 18 | 0 －0.027 |
| 18 | 30 | 0 －0.033 |
| 30 | 50 | 0 －0.039 |
| 50 | 80 | 0 －0.046 |
Without Command
| Over | or less | Tolerance |
| 0.5 | 3 | ±0.1 |
| 3 | 6 | ±0.1 |
| 6 | 30 | ±0.2 |
| 30 | 120 | ±0.3 |
Class m (intermediate).
| Part Name | Material | Qty. |
| Main Nut | Brass | 1 |
| Secondary Nut | Brass | 1 |
| Wave Spring | JIS−SWRH72B | 1 |
| Set Screw | EN 1.7220 Equiv. | 2 |
| Item | Content |
| Standard Chevron | Tr Standard (Old TM Standard) |
| Tolerance and Allowable Dimension | JIS B 0217-1,2 |
| Screw Accuracy (Threaded) | 7e |
| Nut Accuracy (Tapped) | 7H |
| Single Pitch Error | ±0.02 |
| Accumulated Pitch Error | ±0.15/300mm |
old JIS TM standard (abolished).
Dimensional tolerances are regulated for Tr standard.
| H=1.866P | H1=0.5P | d2=d-0.5P | |
| d1=d-P | D=d | D2=d2 | D1=d1 |
| Male Thread | d:O.D. | d1:Root Dia. | d2:Effective Dia. |
| Female Thread | D:Root Dia. | D1:I.D. | D2:Effective Dia. |
| P:Pitch | H1:Engage Height | ||
Specification Table
| Part Number |
| MTBLR20 |
| Part Number | Pitch P | D | D1 | T | (L1) | J | B | P.C.D. | K | M | Allowable Dynamic Thrust (kN) | Mass (g) | |
| Type | d | ||||||||||||
| Round Flanged MTBLR | 10 | 2 | 20 | 36 | 5 | 33 | 13 | 15 | 26 | 4.3 | 3 | 2.60 | 100 |
| 12 | 22 | 44 | 36.5 | 16.5 | 16 | 31 | 5.4 | 3.39 | 130 | ||||
| 16 | 3 | 28 | 51 | 6 | 45 | 21 | 20 | 38 | 6.6 | 4 | 6.29 | 230 | |
| 20 | 4 | 32 | 56 | 52 | 24 | 25 | 42 | 9.32 | 310 | ||||
For orders larger than indicated quantity, please request a quotation
[ ! ] This product is a single thread screw and therefore the pitch P = lead.
[ ! ] Recommended Grease: Lithium soap-based grease No. 2 (Please wipe off the antirust oil before applying.)
Related Components
| 30-degree Lead Screw | 30-degree Trapezoidal Screw for Nut Bracket | 30-degree Trapezoidal Screw for Support Units Square Type | 30-degree Trapezoidal Screw for Support Units Round Type |
 |  |   |   |
Part Number:
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Part Number
|
|---|
| MTBLR10 |
| MTBLR12 |
| MTBLR16 |
| MTBLR20 |
| Part Number |
Standard Unit Price
| Minimum order quantity | Volume Discount | RoHS | Thread Nominal D (φ) | Allowable Dynamic Thrust (N) | Nut O.D. D (φ) | Nut Length L1 (or L) (mm) | |
|---|---|---|---|---|---|---|---|---|---|
119.27 € | 1 | 5 Days | 10 | 10 | 2600 | 20 | 34 | ||
119.27 € | 1 |
Same day
Stock | 10 | 12 | 3390 | 22 | 36.5 | ||
122.29 € | 1 |
Same day
Stock | 10 | 16 | 6290 | 28 | 45 | ||
135.76 € | 1 |
Same day
Stock | 10 | 20 | 9320 | 32 | 52 |
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Specifications/Overview
■Features of Anti-Backlash
 Anti-Backlash can eliminate play between shaft and nut by spring force of slim preload spring installed between main nut and secondary nut. Even if there is abrasion, spring force controls backlash. (*) The effects will vary depending on applied conditions (Load and Direction). |
 Regular Type has axial play of shaft and nut, and this causes backlash on reverse driving direction. |
■Installation of Anti-Backlash
(1) Remove the tape that is temporarily holding the main and secondary nuts.
(In this condition, the main and secondary nuts are fixed by 2 set screws.)
(2) While the set screw is fixed, turn the shaft of lead screw as it is inserted.
(3) After insertion of secondary nut, set screw is rotated approximately 45° to 90° to loosen.
(Clamping force between the main and secondary nuts is released and spring force works.)
[!] The mounted set screw must not protrude out from external diameter of secondary nut. In order to prevent dropout of set screw
due to vibration and the like, insert to secondary nut part of housing.
| (1) Positioning Error Comparison (Reference Value) | (2) Positioning Repeatability Error Comparison (Reference Value) | |
 |  | |
| ·Controls the deterioration in precision of positioning caused by Moment of Inertia during shut-down of motion and driving fluctuation effect. | ·Anti-backlash design improves the system repeatability. Test Conditions: Sample Nut: MTBLR16 Shaft: MTSRG16-270 Travel Distance: 75 mm |
Basic information
| Type | Flanged Type | Screw Turn Direction | Right-hand Thread | Nut Shape | Round Flanged Type |
|---|---|---|---|---|---|
| Material | EN CC766S Equiv. | Mounting Method | Through Hole | Narrowing the Features | Anti-Backlash |
| Number of Mounting Holes | 4 |
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Basic Attributes
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Thread Nominal D(φ)
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Nut O.D. D(φ)
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Nut Length L1 (or L)(mm)
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Type
- MTBLR
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Optional Attributes
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
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