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Availability:
4 in stock
Separate Type LM guide, two carriage blocks on a 440 mm rail, 30 mm section height, 65 mm assembly width, 45° contact angle, user-adjustable clearance.
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| MFR / Brand | THK |
|---|---|
| MPN | 2HR306RUU+440LH |
| Model | HR3065 / 2HR306RUU+440LH |
| Condition | New |
|---|---|
| Type | Linear Bearing |
| Preload | Not published - HR running clearance is user-adjustable by design rather than factory-set |
| Base Number | HR3065 |
| Industry Terms | separate type LM guide, adjustable clearance linear guide, two-rail linear guide, LM guide set, linear bearing block and rail, HR guide |
| Application Types | Retrofits to older machinery, frames that cannot be machined to profile-rail tolerances, low cross-sectional height designs, heavy transfer and gantry axes where clearance must be tuned at assembly |
| Mpn Variants | 2HR306RUU+440LH, 2HR306RUU, HR306R, 2HR3065UU+440L, HR3065, HR3065UU, HR-3065, 2HSR30RUU+440L, HR 306R UU |
| Manufacturer Status | THK active catalogue series |
| Arrangement Configuration | Two LM blocks supplied on one 440 mm LM rail. THK counts LM blocks on the same rail with the leading numeral on Separate Type designations. A THK HR set is a combination of two LM rails and their LM blocks used on the same plane, and four-way equal load comes from that paired arrangement. |
| Precision Class | H — high accuracy grade. HR is offered in Normal, H, P, SP and UP. |
| Additional Attributes | HR3065 published data. Section height M: 30 mm. Block width W: 40.3 mm. Assembly width W0: 65 mm. Block length L with UU seals: 145 mm. Block body L1: 90 mm. Bolt span C: 50 mm. Block taps: 2 x M10, mountable top and bottom surface. Rail W1: 25 mm. Rail W4: 12 mm. Rail M1: 22.5 mm. Rail hole pitch F: 80 mm. Rail mounting hole: 9 x 14 x 12 mm for M8. Basic dynamic load rating C: 42.6 kN. Basic static load rating C0: 44.4 kN. Static permissible moment MA and MB: 1.27 kN·m one block, 7.71 kN·m two blocks. Block mass: 0.7 kg. Rail mass: 4.6 kg/m. Maximum rail length: 3000 mm. Service temperature: −20°C to 80°C. Accuracy grades offered: Normal, H, P, SP, UP. LaCS lubrication and condition sensor available. Source: THK LM Guide general catalogue A1-284 / A1-286 and model-number coding page A1-577. |
| Dynamic Load Rating | 42.6 kN basic dynamic load rating C |
| Static Load Rating | 44.4 kN basic static load rating C0 |
| Bearing Type | Linear motion guide, Separate Type, full-complement ball, adjustable clearance |
| Item Weight | Block 0.7 kg; rail 4.6 kg/m |
| Number Of Rows | 2 rows of balls per rail |
| Contact Angle | 45° |
| Design Units | Metric |
| Part Number | 2HR306RUU+440LH |
| Cross Reference 1 | HR3065 |
|---|---|
| Cross Reference 2 | HSR30R — HSR-series narrow block with tapped holes |
| Cross Reference 3 | HR3065T (ultra-heavy variant) |
| Cross Reference 4 | HR3065M (stainless variant) |
| Cross Reference 6 | HR3575 |
THK Separate Type LM Guide assembly, marked 2HR306RUU+440LH. Model: HR, full-ball Separate Type. Size: HR3065. Configuration: two carriage blocks with UU end seals on a 440 mm LM rail. Accuracy Grade: H, high accuracy. Section Height M: 30 mm. Assembly Width W0: 65 mm. Contact Angle: 45°. Rolling Elements: two rows of balls per rail, full complement retained by retainer plates.
Model HR takes equal load in all four directions with two rails installed in parallel, keeps a low cross-sectional height, and has adjustable running clearance. Clearance is set at assembly by the positioning of the two parallel rails: tighter for rigidity, looser to suit a structure held to wider tolerances. A THK HR set is a combination of two LM rails and their LM blocks used on the same plane, and four-way equal load comes from that paired arrangement. Clearance adjustment on an HR is simpler and holds accuracy better than on a cross-roller guide.
Section Height M: 30 mm. Block Width W: 40.3 mm. Assembly Width W0: 65 mm. Block Length L with UU seals: 145 mm. Block Body Length L1: 90 mm. Bolt Span C: 50 mm. Block Taps: 2 x M10, mountable from the top surface and the bottom surface. Rail W1: 25 mm. Rail W4: 12 mm. Rail M1: 22.5 mm. Rail Hole Pitch F: 80 mm. Rail Mounting Hole: 9 x 14 x 12 mm for M8.
Basic Dynamic Load Rating C: 42.6 kN. Basic Static Load Rating C0: 44.4 kN. Static Permissible Moment MA: 1.27 kN·m for one block, 7.71 kN·m for two blocks. Static Permissible Moment MB: 1.27 kN·m for one block, 7.71 kN·m for two blocks. Block Mass: 0.7 kg. Rail Mass: 4.6 kg/m. Maximum Rail Length: 3000 mm. Service Temperature: −20°C to 80°C. Accuracy Grades Offered: Normal, H, P, SP, UP. LaCS lubrication and condition sensor is available for the size.
Leading 2: the number of LM blocks used on the same rail, which THK places before the model number on Separate Type designations. Two blocks. HR: Separate Type full-ball LM Guide with adjustable clearance. 3065: section height M 30 mm and assembly width W0 65 mm. UU: end seals fitted both ends; SS adds a side seal and DD is double seals. +440L: a 440 mm LM rail supplied with the blocks. H: high accuracy grade.
Unit Quantity: 1 assembly — two LM blocks and one 440 mm LM rail. Four assemblies are on the shelf.
Searchable variants of this designation: 2HR306RUU+440LH, 2HR306RUU, HR306R, 2HR3065UU+440L, HR3065, HR3065UU, HR-3065, HR 306R UU. Related THK sizes and variants: HR3065T heavy-load type, HR3065M stainless, HR2555, HR3575. Sibling THK series with factory-set preload: HSR30, SR30. Central Surplus also stocks THK HSR25CA, HSR30CA, HSR30B, SR35W and SHW21CA blocks.
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