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GRA 30 ring gauges

The GRA 30 series gauges are primarily utilized to inspect tapered shaft seats intended for cylindrical roller bearings within the NN30K series. Additionally, shaft seats for bearings found in the NNU 49 BK and N 10 K series can also be verified using GRA 30 series gauges. Specifically designed for tapered seats with diameters up to 200 mm, GRA 30 ring gauges ensure accurate measurements in these applications. For tapered seats exceeding 200 mm in diameter, QIBR recommends using DMB taper gauges, as handling ring gauges of such size would pose practical challenges due to their weight. This approach ensures effective and reliable inspection across a broad range of bearing installation scenarios, maintaining precision and reliability in industrial settings.

Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN/VDEh,DIN/VDEh

Product number

GRA 3005-GRA 3040

Bearing model

NN 3005 K-NN 3040 K

Seat diameter (da)

25.1mm-200.35

Seat diameter (db)

27mm-207mm

Seat distance (Bb)

4mm-20mm

Seat distance (Bc)

4.2mm-20.7mm

Mass ring gauge

0.13kg-15.00kg

Brand

QIBR/OEM/Neutral

Package

Standard Export Package

QIBR Model Selection

Filters

Bearing model

Mass

Seat diameter (da)

Seat diameter (db)

Width (B)

NO.	Product Number	Bearing model	Mass	Seat diameter (da)	Seat diameter (db)	Width (B)
1	GRA 3005	NN 3005 K	0.13 kg	25.1 mm	27 mm	16 mm
2	GRA 3006	NN 3006 KTN	0.18 kg	30.1 mm	32 mm	19 mm
3	GRA 3007	NN 3007 K	0.21 kg	35.1 mm	37 mm	20 mm
4	GRA 3008	NN 3008 KTN	0.26 kg	40.1 mm	42 mm	21 mm
5	GRA 3009	NN 3009 KTN	0.31 kg	45.1 mm	47 mm	23 mm
6	GRA 3010	NN 3010 KTN	0.34 kg	50.1 mm	52 mm	23 mm
7	GRA 3011	NN 3011 KTN	0.42 kg	55.15 mm	57 mm	26 mm
8	GRA 3012	NN 3012 KTN	0.45 kg	60.15 mm	62 mm	26 mm
9	GRA 3013	NN 3013 KTN	0.51 kg	65.15 mm	67 mm	26 mm
10	GRA 3014	NN 3014 KTN	0.69 kg	70.15 mm	73 mm	30 mm
11	GRA 3015	NN 3015 KTN	0.73 kg	75.15 mm	78 mm	30 mm
12	GRA 3016	NN 3016 KTN	0.88 kg	80.15 mm	83 mm	34 mm
13	GRA 3017	NN 3017 KTN9	1.00 kg	85.2 mm	88 mm	34 mm
14	GRA 3018	NN 3018 KTN9	1.30 kg	90.2 mm	93 mm	37 mm
15	GRA 3019	NN 3019 KTN9	1.55 kg	95.2 mm	98 mm	37 mm
16	GRA 3020	NN 3020 KTN9	1.70 kg	100.2 mm	103 mm	37 mm
17	GRA 3021	NN 3021 KTN9	2.10 kg	105.2 mm	109 mm	41 mm
18	GRA 3022	NN 3022 KTN9	2.60 kg	110.25 mm	114 mm	45 mm
19	GRA 3024	NN 3024 KTN9	3.05 kg	120.25 mm	124 mm	46 mm
20	GRA 3026	NN 3026 KTN9	3.95 kg	130.25 mm	135 mm	52 mm
21	GRA 3028	NN 3028 K	4.75 kg	140.30 mm	145 mm	53 mm
22	GRA 3030	NN 3030 K	5.60 kg	150.30 mm	155 mm	56 mm
23	GRA 3032	NN 3032 K	6.80 kg	160.30 mm	165 mm	60 mm
24	GRA 3034	NN 3034 K	8.80 kg	170.30 mm	176 mm	67 mm
25	GRA 3036	NN 3036 K	11.50 kg	180.35 mm	187 mm	74 mm
26	GRA 3038	NN 3038 K	13.00 kg	190.35 mm	197 mm	75 mm
27	GRA 3040	NN 3040 K	15.00 kg	200.35 mm	207 mm	82 mm

Functions of GRA 30 ring gauges

1. Dimension Measurement

Ensures that the dimensions of bearings conform to design specifications.

2. Angle inspection

Verifies that the taper angles meet production requirements, preventing bearing failures caused by assembly errors.

3. Quality control

Serves as part of production quality control, helping to check and verify the accuracy of products.