THKHSR30B1SS(GK)LM Guide Carriage Block, Size 30, Four-Through-Hole Flange Type, 28 mm Rail, 45° Four-Way Equal Load, End and Side Seals — Block Only, No Rail

Product Description

What this part is:

THK HSR30B1SS(GK) LM Guide carriage block, HSR30B: a four-way equal-load linear bearing block for a 28 mm wide HSR size-30 LM rail. Four rows of balls at a 45° contact angle give equal rated load in the radial, reverse-radial and both lateral directions. Block only, supplied without an LM rail.

Decoding the designation:

HSR — THK’s four-way equal-load full-ball LM Guide series.

30 — size 30, for a 28 mm wide rail.

B — flanged block with four through holes.

1 — THK’s coding field for the number of LM blocks used on the same rail.

SS — end seal plus side seal.

GK — THK’s interchangeable block-only / rail-only series.

Specifications:

Series: HSR. Block Type: B, flanged, four through holes. Rolling Elements: Balls, four rows at 45° contact angle, held by retainer plates. Basic Dynamic Load Rating C: 40.5 kN. Basic Static Load Rating C0: 53.7 kN. Static Permissible Moment MA: 0.599 kN·m for one block, 3.1 kN·m for two blocks. Static Permissible Moment MB: 0.599 kN·m for one block, 3.1 kN·m for two blocks. Static Permissible Moment MC: 0.652 kN·m for one block. Block Mass: 1.1 kg. Rail Mass: 4.8 kg/m. Seals: End seal plus side seal (SS); UU seal resistance 7.80 N. Grease Nipple Specification: B-M6F. Standard Grease: AFB-LF. Service Temperature: −15 to 80 °C. Preload Grades Offered: Normal, light preload C1, medium preload C0. Accuracy Grades Offered: Normal, H, P, SP, UP. Material: Iron-based steel block, rail and balls. Unit Quantity: 1 Pc.

Dimensions and mounting:

Assembly Height M: 42 mm. Block Width W: 90 mm. Block Length L, with UU or SS seals: 98 mm. Block Body L1: 70.4 mm. Mounting Hole Pattern B x C: 72 x 52 mm, with four ø9 mm through holes (H) for M8 bolts. Flange: t 18 mm, T 9 mm, T1 10 mm. Block Shoulder K: 35 mm. N: 7 mm. E: 12 mm.

Mating Rail Width W1: 28 mm (±0.05). Rail Height M1: 26 mm. W2: 31 mm. Rail Mounting Hole Pitch F: 80 mm. Rail Hole d1 x d2 x h: 9 x 14 x 12 mm. Rail Mounting-Hole Cap: C8. Maximum Standard Rail Length: 3000 mm, 2520 mm in stainless.

Compatibility and replacement:

Pairs with any HSR30 GK rail of matching accuracy and preload grade. Alternative renderings of the same part: HSR30B1SS, HSR30B1SS(GK), HSR30B1SSGK, HSR-30B1-SS, HSR30-B1-SS, HSR 30 B1 SS, HSR30B, HSR-30-B, HSR30B1UU. Same size, different mounting: HSR30A (tapped flange, 6 x M10 on 72 x 52 mm), HSR30CA (tapped, top or bottom mount), HSR30R (60 mm wide, 4 x M8 taps on 40 x 40 mm). Same block in stainless: HSR30BM. Long block, same cross-section and higher rating: HSR30LB (C 48.9 kN, C0 70.2 kN).

Frequently asked questions:

What is the hole pattern of the THK HSR30B?

Four ø9 mm through holes on a 72 x 52 mm pattern, for M8 bolts.

What are the load ratings of the HSR30B1SS?

Basic Dynamic Load Rating C: 40.5 kN. Basic Static Load Rating C0: 53.7 kN.

Does the HSR30B1SS(GK) include a rail?

No, it is the block only. It pairs with any HSR30 GK rail of matching accuracy and preload grade.